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A068275
1/8 the number of colorings of an n X n rhombic hexagonal array with 8 colors.
1
1, 252, 1679832, 296251234272, 1382247094854612672, 170624894466027144691360512, 557224605182442995086270684790287872, 48144796146667109603913695806315581931924703232, 110052419905312514544259421134157522506638480153437190868992
OFFSET
1,2
COMMENTS
Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2002
EXTENSIONS
a(6)-a(9) from Alois P. Heinz, May 02 2012
STATUS
approved