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 A249696 #11 Dec 19 2014 04:46:51 %S A249696 1,1,2,4,11,34,153,1035,12247,274153,11999059,1018915198 %N A249696 Number of distinct permanental polynomials among all simple undirected graphs on n nodes. %H A249696 Shunyi Liu, Jinjun Ren, <a href="http://arxiv.org/abs/1411.0184">Enumeration of copermanental graphs</a>, arXiv:1411.0184 [math.CO], (1-November-2014) %Y A249696 Cf. A082104 (distinct characteristic polynomials). %K A249696 nonn,hard,more %O A249696 0,3 %A A249696 _Joerg Arndt_, Nov 04 2014