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 A091130 #9 Jun 16 2013 10:38:11 %S A091130 1,0,4,5,22 %N A091130 Number of polydudes(2): a(n) is the number of polydudes with n cells. See the link for the definition. Not the same as A056843. %C A091130 The polydudes(1) (A056843) and the polydudes(2) (this sequence) are both subsets of the polydrafters (A056842). %H A091130 D. Paterson, <a href="http://mathforum.org/kb/thread.jspa?forumID=129&threadID=355644&messageID=1088019#1088019">Pentominos & Dodecadudes</a> %Y A091130 Cf. A056842, A056843. %K A091130 more,nonn,less %O A091130 1,3 %A A091130 _David Wasserman_, Dec 19 2003