A068287 - OEIS

%I #9 May 03 2012 16:54:27

%S 1,252,1679832,296251234272,1382247232944627672,

%T 170624931716603851850980512,557224793178655263880694805929352312,

%U 48144818121088035723665058177874441292104576992,110052483236400191824645806778218519319800722550874233268152

%N 1/8 the number of colorings of an n X n staggered hexagonal array with 8 colors.

%C Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.

%Y Cf. A068239-A068305, A000332, A002417, A027441, A212194, A212195.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 24 2002

%E a(6)-a(9) from _Alois P. Heinz_, May 03 2012