Question 978310
5,17,37,---,101
<pre>
  5 =   4+1 =  2²+1 = 1st even natural number squared plus 1.
 17 =  16+1 =  4²+1 = 2nd even natural number squared plus 1.
 37 =  36+1 =  6²+1 = 3rd even natural number squared plus 1.
  &#8591; =   &#8591;+1 =  &#8591;²+1 = &#8591;th even natural number squared plus 1.
101 = 100+1 = 10²+1 = 5th even natural number squared plus 1.

I'll bet you can fill in the boxes yourself.

Edwin</pre>