A computer program generates a sequence of numbers a1, a2, a3, ... such that a1=1, a2=2, and ak=a(k-2)*4-1 for 2 < k < n for n=10. Find a6.
Choose the correct choice from the following answers
A) 19	B) 27	C) 31	D) 36	E) 41
a1=1   a2=2   a3=1*4-1= 
<gadget id="calculator">1*4-1</gadget>
<output>3</output>
3   a4=2*4-1= 
<gadget id="calculator">2*4-1</gadget>
<output>7</output>
7   a5=3*4-1= 
<gadget id="calculator">3*4-1</gadget>
<output>11</output>
11   a6=7*4-1= 
<gadget id="calculator">7*4-1</gadget>
<output>27</output>
27   27
<result>B</result>
A computer program generates a sequence of numbers a1, a2, a3, ... such that a1=1, a2=2, and ak=a(k-2)*4-1 for 2 < k < n for n=10. Find a6.