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A172891
Number of n X n 0..6 arrays with row sums 12 and column sums 12
1
0, 1, 406, 3789991, 252171345610, 92945759551815326, 155517962859038458507570, 1010575567197244536303853333716, 22475445868427318276367515097088853904, 1540307034615560553585359584559295771487536000
OFFSET
1,3
LINKS
CROSSREFS
Sequence in context: A210329 A317982 A203936 * A172921 A063138 A118327
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved