N=int(input())
x = list(map(int,input().split()))
dp = [[0]*(N+2) for _ in range(3)]
dp[1][0] = -1
dp[1][1] = -1
dp[1][2] = 1
u=[-1, 10346805, 505173406, 3448935, 252586703, 2069361, 501724471, 1478115, 626293355, 1149645, 501034684, 728213351, 750862239, 154642063, 500739061, 689787, 813146681, 530020404, 500574826, 53176148, 250517342, 492705, 864106679, 478710734, 875431123, 400413875, 577321035, 383215, 750369534, 345184375, 500344897, 613236998, 906573344, 909404455, 265010202, 295623, 250287413, 702982351, 26588074, 384880690, 125258671, 634398707, 500246356, 325822021, 932053343, 229929, 239355367, 957666960, 937715565, 285925447, 700206941, 176673468, 788660521, 207742394, 500191611, 545642673, 375184767, 684392054, 672592191, 728988934, 750172452, 672300772, 306618499, 164235, 453286672, 230928414, 954702231, 567318613, 132505101, 826236916, 500147815, 535357001, 625143710, 643977358, 851491179, 800137963, 13294037, 818316198, 192440345, 443168950, 562629339, 333461074, 817199357, 108558396, 250123178, 706004085, 662911014, 448394794, 966026675, 730453340, 500114968, 307806011, 619677687, 871079004, 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795116038, 72600686, 991638092, 49839486, 175586439, 467061685, 160166112, 820462543, 328394291, 722563832, 705549286, 879359519, 160950140, 135316890, 548442136, 519876448, 203407967, 712235377, 75357341, 811353411, 543402001, 661846043, 67758161, 284459936, 436597372, 525526680, 992550090, 116313839, 461308692, 112841618, 935194576, 969657709, 522895130, 408046491, 765001155, 143651856, 408243765, 121960497, 211573785, 74959506, 460027801, 74609787, 443717848, 83917233, 695339666, 117413201, 247338034, 786864573, 96850494, 316140917, 996119167, 862483132, 350300551, 104003809, 180156359, 864650305, 99646459, 985261045, 754987854, 75901424, 114891464, 560320193, 31569600, 760882755, 34884867, 578231689, 15612306, 845899524, 414988972, 699503087, 825698362, 711852428, 332928786, 769665936, 615598494, 405929695, 393829946, 73317522, 8515076, 567165327, 110215604, 588151916, 562003800, 829706089, 379559157, 793504629, 666483693, 141832581, 434394784, 834898995, 572108037, 541239967, 838486465, 402694599, 296358760, 772101357, 823550033, 960279202, 688990555, 806950954, 271675531, 524871554, 211844989, 550447721, 563948223, 533459418, 20834474, 693487313, 1654215, 221488745, 195351516, 803019764, 203239740, 225907078, 502754447, 859267746, 493835100, 746120268, 238772607, 742984083, 108629799, 555299921, 636994981, 736055715, 925743719, 191949220, 634954948, 898384516, 137344442, 455196303, 229222775, 774762053, 105848577, 910980372, 273078062, 352929389, 836190991, 703285773, 992641741, 507414649, 494729890, 363567626, 854744225, 566034733, 806258002, 105368275, 217406756, 847581521, 845623261, 964345629, 477951994, 401778038, 355451894, 629346462, 241777452, 151190698, 637690242, 725091570, 86914769, 453151822, 659764452, 751398093, 701688255, 933947903, 382805079, 578032021, 579173279, 831272353, 774360674, 413794239, 833297986, 939149656, 610309738, 104060658, 309082097, 183788465, 970138964, 34234972, 461615308, 56316058, 435929409, 102985717, 646371927, 370314829, 31148672, 130150842, 191981027, 533924438, 684619881, 525943242, 57340580, 195589206, 933720289, 949886495, 659935632, 348434709, 822201528, 242170726, 124510078, 235680345, 473599212, 7091780, 381872859, 879813546, 301527848, 20609568, 688727692, 757768494, 431328796, 368938460, 643963643, 66362684, 956309698, 193922035, 867648192, 425009299, 384557871, 262007009, 337653568, 398476905, 797845678, 76522298, 745865302, 630755293, 806856409, 399087191, 555810529, 966388601, 590712463, 845025601, 942258635, 939981560, 417809347, 685727839, 596196781, 415390759, 903391698, 997393286, 145698648, 201522038, 102651570, 372435144, 230778710, 438159450, 767102106, 521008618, 208967690, 55032058, 772195615, 899078720, 114258936, 207552388, 866024127, 428247139, 792300477, 147056757, 702343352, 462540429, 838357589, 331708441, 821700672, 308335360, 332575896, 717196922, 57964285, 901528589, 476279287, 588325613, 90644396, 802924786, 460914939, 519000799, 740312881, 298842988, 56819302, 547452698, 732201947, 499514268, 58525568, 429422431, 185270426, 167298622, 155386068, 831658601, 230811931, 330235690, 720818244, 622285787, 872164513, 388980051, 122408206, 969105586, 625082133, 380495774, 659288379, 387756222, 32931370, 367700569, 647345681, 703724813, 405461944, 108774183, 820998101, 460244943, 451457430, 359401399, 188633559, 871563723, 534074874, 475472817, 552070977, 351515616, 463786417, 825413342, 547953705, 901628101, 110860844, 225251574, 18635324, 646204673, 196533530, 46625428, 950582516, 630747162, 957482283, 899904252, 144749285, 633596297, 534216740, 665950553, 393826417, 787029192, 226178787, 549415032, 288710792, 607140134, 710278477, 835215565, 286007133, 699624975, 368473068, 685614096, 473679671, 237835467, 522557506, 576630908, 556379981, 126383588, 158579596, 724638797, 146952593, 618333196, 590793130, 369890586, 116417420, 558095739, 207145501, 834710973, 506757870, 861663314, 75167312, 74301528, 603453086, 32694860, 667203686, 872469232, 979533906, 50145757, 464003683, 596680277, 377571805, 494164119, 513494365, 918407796, 28373699, 939408030, 419076255, 18089516, 989406080, 483147178, 864007105, 446668490, 577343858, 506258464, 597327314, 893167619, 373504103, 180691795, 621874106, 231428152, 649530824, 987497105, 761168027, 6732594, 543270340, 615426812, 286798800, 171100113, 71017765, 973839873, 652467477, 180635247, 628203500, 170029924, 721986168, 725537338, 41934523, 556386470, 428100104, 334401106, 347804007, 782874096, 114204559, 762022646, 11195133, 859930754, 934236880, 846105766, 153134096, 456047989, 996059068, 617450771, 964743333, 985303058, 509585770, 23534272, 146189348, 444268112, 432937021, 65993651, 985633292, 583165945, 124814892, 499522330, 604788339, 944900586, 983727974, 318410121, 355700805, 143541771, 585478459, 717551865, 662947533, 138272968, 495750306, 489959662, 634191499, 765856836, 433079496, 52045709, 382860065, 896464947, 148971157, 455463465, 144905558, 900117865, 557950582, 779370731, 653333021, 539523648, 828454318, 301899901, 460862365, 331849652, 215801735, 417348147, 737596522, 512457371, 742740131, 736090132, 592731071, 18863023, 943739183, 721793664, 742056186, 434700813, 985915104, 402521484, 303368315, 983590303, 812726064, 989839146, 80123873, 738915271, 300001097, 549043528, 65701476, 159315599, 746457626, 546272912, 80902110, 1481479, 329986294, 930543441, 78753737, 523730090, 895689115, 147100323, 493344292, 654517738, 996937504, 224676282, 807035319, 390538639, 250793069, 933482252, 30089775, 782646511, 573465314, 220053864, 180773571, 190884284, 399557963, 190316527, 587026412, 771649657, 711981691, 710535737, 768558667, 892990027, 420304699, 615685716, 36784396, 851091833, 974184448, 146771716, 586284280, 735490403, 737414198, 507110098, 468935381, 803728588, 689514676, 538689376, 672106357, 776129923, 43676105, 340840826, 110796544, 360337756, 769515085, 137583923, 187317034, 971606942, 367508977, 801599243, 705320689, 377484534, 503995205, 956911236, 337642956, 839131071, 202249460, 16074204, 408089325, 734272702, 165407515, 502153773, 149623095, 203150694, 493912490, 358560971, 12280683, 391752584, 717209905, 883853783, 354701046, 564985879, 526432807, 249607799, 935928105, 605222857, 203293181, 843276067, 212265237, 98313631, 816286984, 626219259, 827851048, 887900514, 843810015, 111763942, 216276745, 768144350, 846597948, 317035951, 281094050, 869675537, 463576552, 21979105, 398180240, 306268742, 918080185, 210274125, 469143345, 698463591, 795755114, 371328074, 36073855, 384214362, 49865184, 219192052, 227112287, 737382213, 985894505, 123499149, 850920435, 550298797, 452998786, 413578107, 230264240, 208103828, 905096096, 823991064, 685282922, 332638594, 373513919, 574142793, 73143818, 352113758, 996558566, 873579890, 298812095, 288456603, 828468238, 890836243, 54734190, 603357697, 895873505, 982283524, 479054854, 199125806, 224110269, 206480921, 29688578, 715655702, 115081270, 388004829, 873907789, 873504467, 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146256109, 450765143, 658470997, 482546836, 316573287, 166920623, 364658140, 769192920, 48241338, 760543068, 205764445, 471338629, 147291787, 150006101, 464828217, 510865122, 428962245, 61534844, 442009535, 318720110, 786364687, 871125180, 258635666, 388368209, 43316877, 180213060, 733798748, 599173351, 51777387, 193461536, 200303770, 450308786, 849577321, 854939010, 776176155, 747353545, 551130535, 464254349, 670599959, 360622076, 770666371, 302692306, 800142149, 617052342, 293531879, 771789461, 621298649, 769719996, 48852775, 962333610, 632931560, 761958554, 737113411, 122622607, 246528122, 625567226, 366848870, 357654259, 418495711, 899186076, 982395414, 858667177, 468015528, 660566267, 468725903, 570136791, 12367821, 257566137, 76900920, 439944756, 269850288, 512813826, 250503453, 995178380, 892406109, 163235596, 961933549, 972583149, 359209718, 994177168, 100904654, 728743138, 915580246, 10841147, 947913530, 707978966, 178507963, 577306149, 827950482, 25279401, 638416288, 519106447, 751806097, 980749064, 719170884, 21053669, 160887165, 58134745, 122971573, 667001743, 283067171, 752931610, 641656020, 117901468, 259315942, 218328529, 587123011, 199159944, 911594955, 575333906, 472974012, 130218232, 852382947, 832183569, 448770300, 866934508, 388656500, 845454677, 151331302, 659767016, 431282362, 0]
a = 1
MOD = 10**9+7
start = 2
if N>=10000:
    start = 10000
    dp[1][:10002] = u
for i in range(start,N):
    a = (a*(i-1))%MOD
    i2 = (i+2)%2+1
    i3 = (i+1)%2+1
    for j in range(1,i+2):
        if i+1==j:
            dp[i3][j] = (dp[i2][j-1]*(i-0) + a)%MOD
        elif j==1:
            dp[i3][j] = (dp[i2][j]*(i-1) - a)%MOD
        else:
            dp[i3][j] = (dp[i2][j]*(i-j) + dp[i2][j-1] * (j-1))%MOD
res = 0
n = (N-2)%2+1
for i in range(N):
    res += (dp[n][i+1]*x[i])%MOD
print(res%MOD)
