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 A250397 #6 Nov 28 2014 23:53:53 %S A250397 0,0,0,2,0,0,0,12,2,30,0,0,10,10,0,2,112,0,0,6,42,52,2,0,0,54,16,0,96, %T A250397 0,0,46,12,60,0,84,260,6,22,126,0,60,112,14,16,124,136,40,0,150 %N A250397 Differences between A250396 and A104080. %Y A250397 Cf. A250396, A104080. %K A250397 nonn %O A250397 1,4 %A A250397 _Morgan L. Owens_, Nov 21 2014