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 A068267 #8 Apr 27 2012 17:37:03 %S A068267 1,3856,3373402576,669566077899139456,30151771791510037597255660816, %T A068267 308053647651282803104693654675496996201056, %U A068267 714058835879284684324470416584413995932326192121670240896,375522326791659350740130359662485880296223549591107434149113597657567050816 %N A068267 1/17 the number of colorings of an n X n square array with 17 colors. %Y A068267 Cf. A068239-A068305, A000332, A002417, A027441, A182368, A182406. %K A068267 nonn %O A068267 1,2 %A A068267 _R. H. Hardin_, Feb 24 2002 %E A068267 a(5)-a(8) from _Alois P. Heinz_, Apr 27 2012