A172594 Number of 5*n X 5 0..1 arrays with row sums 2 and column sums 2*n

2040, 56586600, 2604964362000, 149144498504001000, 9647422924194982967040, 674741194624071430134879600, 49825573548689359631837113344000, 3829361053685468612006211542840385000

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n=1..19

Crossrefs

Sequence in context: A250009 A015158 A015286 * A115553 A068264 A024021

Adjacent sequences: A172591 A172592 A172593 * A172595 A172596 A172597

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved