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 A202651 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. 4
 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 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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, ... LINKS EXAMPLE 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 CROSSREFS 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 KEYWORD nonn,tabl,more AUTHOR R. H. Hardin, Dec 22 2011 STATUS approved

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Last modified July 5 15:05 EDT 2022. Contains 355099 sequences. (Running on oeis4.)