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 A091742 #3 Oct 12 2012 14:40:20 %S A091742 1,26,775,32516,1894429,148008446,15005570563,1920091871816, %T A091742 303034557325177,57867367557774626,13156672434190398271, %U A091742 3513034745241511676876,1088776741031904909773845 %N A091742 Second column (m=1) of triangle A060063. %F A091742 a(n)= A060063(n, 1), n>=1. %K A091742 nonn,easy %O A091742 1,2 %A A091742 _Wolfdieter Lang_, Feb 13 2004