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A172626
Number of n X n 0..2 arrays with row sums 9 and column sums 9
1
0, 0, 0, 0, 120, 16214000, 7873709050620, 9350902053107858880, 26088526624958727703324771, 162526525004284727135887319788800, 2143395673887060254676185406326252145600
OFFSET
1,5
LINKS
CROSSREFS
Sequence in context: A003922 A210279 A367569 * A258926 A357545 A294320
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved