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A068287
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1/8 the number of colorings of an n X n staggered hexagonal array with 8 colors.
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1
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1, 252, 1679832, 296251234272, 1382247232944627672, 170624931716603851850980512, 557224793178655263880694805929352312, 48144818121088035723665058177874441292104576992, 110052483236400191824645806778218519319800722550874233268152
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OFFSET
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1,2
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COMMENTS
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Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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