A172801 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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