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A153472
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1/9 of the number of 9-colorings of a planar n X n X n triangular grid.
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1
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1, 56, 19208, 40356008, 519359253560, 40941262367510120, 19769162164304264642504, 58472138404795144043227508456, 1059359506545823729966428034297457864, 117563210619769003021098235186555283816605208
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OFFSET
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1,2
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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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