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A172553
Number of 2*n X n 0..1 arrays with row sums 3 and column sums 6
1
0, 0, 1, 2520, 56586600, 3718394156400, 617944896216648000, 231528006523766358806400, 178355054529362612768336870400, 262180318469859848392495320519360000
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
R. H. Hardin, Table of n, a(n) for n=1..41
CROSSREFS
Sequence in context: A123485 A282433 A228080 * A172580 A172684 A172652
Adjacent sequences: A172550 A172551 A172552 * A172554 A172555 A172556
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved

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Last modified September 28 06:41 EDT 2024. Contains 376277 sequences.
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