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A172541 Number of n X n 0..1 arrays with row sums 7 and column sums 7. 3
0, 0, 0, 0, 0, 0, 1, 40320, 14398171200, 8302816499443200, 7722015017013984456000, 11649337108041078980732943360, 28278447454165011203551734584421120, 108738182111446498614705217754614976371200 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

R. H. Hardin, Table of n, a(n) for n=1..23

CROSSREFS

Column 7 of A008300, Cf. A075754.

Sequence in context: A045516 A160318 A227670 * A287084 A071550 A181724

Adjacent sequences:  A172538 A172539 A172540 * A172542 A172543 A172544

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 06 2010

STATUS

approved

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Last modified August 23 11:46 EDT 2017. Contains 290995 sequences.