This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A159583 #2 Mar 30 2012 17:37:58 %S A159583 1,31,2521,97921,4974481,226965751,10783342081,504420084871, %T A159583 23735900452321,1114384154071681,52364857850613001, %U A159583 2459808940392975631,115562692701892638721,5428914300540041959471,255044709450472227347881 %N A159583 Values of A110391(5n)/A110391(n). %C A159583 It appears that from a(2)=2521 onward, this sequence is the same as A157696. %Y A159583 A110391, A157696 %K A159583 nonn %O A159583 0,2 %A A159583 _John W. Layman_, Apr 16 2009