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 A068266 #8 Apr 27 2012 17:36:15 %S A068266 1,3165,1982119455,245622604880564955,6022672393066051875922651155, %T A068266 29220829891835424567142114269163936868895, %U A068266 28052931461360411640129365206060753190589761972840149815,5329007775881376959796836954274567596610268811025721999774999394622215355 %N A068266 1/16 the number of colorings of an n X n square array with 16 colors. %Y A068266 Cf. A068239-A068305, A000332, A002417, A027441, A182368, A182406. %K A068266 nonn %O A068266 1,2 %A A068266 _R. H. Hardin_, Feb 24 2002 %E A068266 a(5)-a(8) from _Alois P. Heinz_, Apr 27 2012