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A202651
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Table read by downward antidiagonals: T(n,k) is the number of n X n 0..k arrays with no row or column sum equal to the previous one.
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4
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2, 3, 8, 4, 52, 126, 5, 184, 8460, 10016, 6, 480, 143028, 14394092, 3648810, 7, 1040, 1217196, 1960824272, 231197740500, 5616280768, 8, 1988, 6835050, 82673548892, 443471777729100
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OFFSET
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1,1
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COMMENTS
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Table starts
2. 3, 4, 5, 6, 7, 8, ...
8, 52, 184, 480, 1040, 1988, ...
126, 8460, 143028, 1217196, 6835050, ...
10016, 14394092, 1960824272, 82673548892, ...
3648810, 231197740500, 443471777729100, ...
5616280768, ...
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LINKS
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Table of n, a(n) for n=1..26.
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EXAMPLE
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Some solutions for n=3, k=3:
2 0 3 2 0 1 0 0 3 0 1 3 0 0 3 1 2 1 2 0 3
1 0 0 0 1 3 3 0 2 1 2 3 0 3 2 0 2 3 2 0 0
3 1 0 2 0 0 0 0 1 0 1 3 2 1 0 0 2 1 0 1 3
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CROSSREFS
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Rows n=2..4: A035288, A202652, A202653.
Column 3 is A202631.
Sequence in context: A194931 A195248 A229870 * A334859 A084110 A299788
Adjacent sequences: A202648 A202649 A202650 * A202652 A202653 A202654
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KEYWORD
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nonn,tabl,more
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AUTHOR
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R. H. Hardin, Dec 22 2011
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STATUS
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approved
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