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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
CROSSREFS
Sequence in context: A058445 A290540 A132910 * A216908 A080126 A335394
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)