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 A068302 #8 May 04 2012 16:17:03 %S A068302 1,1320,146520000,1368698694000000,1075984617953259154800000, %T A068302 71185491858527630409715040263200000, %U A068302 396336553255260873925931533264339353950473200000,185705162149755607151153966767311643039842133737264420356400000 %N A068302 1/13 the number of colorings of an n X n octagonal array with 13 colors. %Y A068302 Cf. A068239-A068305, A000332, A002417, A027441, A212208, A212209. %K A068302 nonn %O A068302 1,2 %A A068302 _R. H. Hardin_, Feb 24 2002 %E A068302 a(5)-a(8) from _Alois P. Heinz_, May 04 2012