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A145244
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1/5 of the number of 5-colorings of an n X n array symmetric about both diagonal and antidiagonal.
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0
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1, 4, 64, 832, 43264, 1827904, 308948224, 42427198528, 23308417310464, 10404188730539968, 18578639958381807616, 26955458921407543923136, 156455150623383016555451392
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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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STATUS
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approved
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