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A068286
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1/7 the number of colorings of an n X n staggered hexagonal array with 7 colors.
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1
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1, 150, 390750, 17684490750, 13905331460469750, 189961376944305892137750, 45086270412704540409445089549750, 185916670055945278226619825124072763091750, 13319483009963134380534870853035913218901916338644750
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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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