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A172550 Number of 2*n X n 0..1 arrays with row sums 9 and column sums 18 1
0, 0, 0, 0, 0, 0, 0, 0, 1, 2375880867360000, 86574740102712303011539719750000, 3113598948052994576761792558312393011168670080000, 177115577520155240531744027851206753629735074356474328692651750000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

LINKS

R. H. Hardin, Table of n, a(n) for n=1..14

CROSSREFS

Sequence in context: A058445 A290540 A132910 * A216908 A080126 A233844

Adjacent sequences:  A172547 A172548 A172549 * A172551 A172552 A172553

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified December 9 17:18 EST 2019. Contains 329879 sequences. (Running on oeis4.)