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 A068285 #9 May 03 2012 16:52:26 %S A068285 1,80,65600,552093440,47695073906240,42295002762341131520, %T A068285 384997602083152626170331200,35973286295593063089098993201626880, %U A068285 34502872879799250159432202960093141227521600 %N A068285 1/6 the number of colorings of an n X n staggered hexagonal array with 6 colors. %C A068285 Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4. %Y A068285 Cf. A068239-A068305, A000332, A002417, A027441, A212194, A212195. %K A068285 nonn %O A068285 1,2 %A A068285 _R. H. Hardin_, Feb 24 2002 %E A068285 a(7)-a(9) from _Alois P. Heinz_, May 03 2012