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A172536
Number of n X n 0..1 arrays with row sums 8 and column sums 8.
2
0, 0, 0, 0, 0, 0, 0, 1, 362880, 1371785398200, 7673688777463632000, 65599839591251908982712750, 885282776210120715086715619724160, 19040419266278799766631032461849139013040
OFFSET
1,9
LINKS
CROSSREFS
Column k=8 of A008300.
Sequence in context: A246220 A160319 A227671 * A287085 A071551 A181725
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved