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A172721
Number of 9*n X 9 0..2 arrays with row sums 2 and column sums 2*n
1
41514583320, 2402820978940192425615000, 384184227197088213207839624049360408000, 95131219937961621952706904277268129938808819520975000
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A199428 A287261 A172631 * A259350 A237495 A227387
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved