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A172552
Number of 2*n X n 0..1 arrays with row sums 6 and column sums 12
1
0, 0, 0, 0, 0, 1, 681080400, 7373018003758407000, 178355054529362612768336870400, 10697695830125272790880922760946584535000
OFFSET
1,7
LINKS
CROSSREFS
Sequence in context: A234071 A234795 A035795 * A172604 A172709 A250434
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved