text: 1  ==>  times 2,  plus 1  ==>  = 3\n   3  ==>  times 4, minus 1  ==>  = 11\n  11  ==>  times 6,  plus 1  ==>  = 67\n\nAnd so the next number in the sequence will be\n\n  67  ==>  times 8, minus 1  ==>  = 535