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 A068303 #8 May 04 2012 18:05:12 %S A068303 1,1716,303771468,5550709388138772,10469390085669243613847820, %T A068303 2038288377309848857407579410051499636, %U A068303 40962006853292026329447493002836988654168890167788,84970500229420999013828420742335437041383054287385138553076248252 %N A068303 1/14 the number of colorings of an n X n octagonal array with 14 colors. %Y A068303 Cf. A068239-A068305, A000332, A002417, A027441, A212208, A212209. %K A068303 nonn %O A068303 1,2 %A A068303 _R. H. Hardin_, Feb 24 2002 %E A068303 a(5)-a(8) from _Alois P. Heinz_, May 04 2012