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A068272
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1/5 the number of colorings of an n X n rhombic hexagonal array with 5 colors.
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1
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1, 36, 6588, 6169500, 29607951492, 728359861595076, 91850117930957987604, 59375832328440271451653884, 196759041550650648492160100067468, 3342365125469959463321258123750822068332, 291049545090789051667036543236086657649935910108
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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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