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 A159554 #9 Jan 09 2015 17:16:56 %S A159554 2,3,4,7,8,24,20,67,96,256,188,1060,632,3228,5244,11427,7712,51888, %T A159554 27596,184912,232888,606628,364724,2807936,2405184,8671944,10368080, %U A159554 36873652,18512792,167268640,69273668,496472227,551130064,1856103040 %N A159554 a(n) = A159553(n)/n. %C A159554 a(n) = A159069(n) + 1. %Y A159554 Cf. A159069, A159553. %K A159554 nonn %O A159554 1,1 %A A159554 _Leroy Quet_, Apr 14 2009 %E A159554 Extended by _Ray Chandler_, Jun 18 2009