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A172923
Number of n X n 0..7 arrays with row sums 9 and column sums 9.
1
0, 6, 1216, 2113288, 20095347085, 828045453260560, 122498884159587560730, 56021411242071401516696320, 70241609479301663107223809203427, 218979482042361137186381999071773029400
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
R. H. Hardin, Table of n, a(n) for n=1..15
CROSSREFS
Sequence in context: A159717 A160857 A160005 * A131675 A263437 A001324
Adjacent sequences: A172920 A172921 A172922 * A172924 A172925 A172926
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved

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Last modified November 16 09:33 EST 2024. Contains 377785 sequences.
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