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 A068305 #8 May 04 2012 18:32:15 %S A068305 1,2730,1097599230,65013773510046270,567344965666217922692546310, %T A068305 729405912578031916581095228654013174510, %U A068305 138156586653036397048665899068285784224754055444205830,3855264256604335001270711977271948484283006596889356139648293174199350 %N A068305 1/16 the number of colorings of an n X n octagonal array with 16 colors. %Y A068305 Cf. A068239-A068305, A000332, A002417, A027441, A212208, A212209. %K A068305 nonn %O A068305 1,2 %A A068305 _R. H. Hardin_, Feb 24 2002 %E A068305 a(5)-a(8) from _Alois P. Heinz_, May 04 2012