A172601 Number of 7*n X n 0..1 arrays with row sums 3 and column sums 21

0, 0, 1, 472518347558400, 49825573548689359631837113344000, 187524788254217999458899339512832890227588026696000, 17188521061665681913347495181567174669437929715236078389999795132800000

Offset

1,4

Links

R. H. Hardin, Table of n, a(n) for n=1..10

Crossrefs

Sequence in context: A175531 A186914 A172665 * A086438 A261149 A104873

Adjacent sequences: A172598 A172599 A172600 * A172602 A172603 A172604

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved