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A172617
Number of 9*n X 9 0..1 arrays with row sums 2 and column sums 2*n
1
14398171200, 109829050417159537464000, 2343976695927269878444049332219968000, 77695253876546044332382434342006457448342441400000
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n=1..11
CROSSREFS
Sequence in context: A134298 A046060 A172595 * A216015 A246109 A038545
Adjacent sequences: A172614 A172615 A172616 * A172618 A172619 A172620
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved

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Last modified November 7 04:35 EST 2024. Contains 377523 sequences.
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