A172801 Number of n X n 0..4 arrays with row sums 7 and column sums 7

0, 2, 189, 157984, 514790020, 5334492792240, 150603715387867113, 10301508972326640532800, 1555479697698632517004275840, 480593112323971829410256539190400

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..20

Crossrefs

Sequence in context: A135126 A053936 A252765 * A318195 A307587 A235680

Adjacent sequences: A172798 A172799 A172800 * A172802 A172803 A172804

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved