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A172801 Number of n X n 0..4 arrays with row sums 7 and column sums 7 1
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: A163794 A135126 A053936 * A085937 A142890 A201183

Adjacent sequences:  A172798 A172799 A172800 * A172802 A172803 A172804

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified May 21 06:21 EDT 2013. Contains 225475 sequences.