login
A172540
Number of n X n 0..1 arrays with row sums 9 and column sums 9.
2
0, 0, 0, 0, 0, 0, 0, 0, 1, 3628800, 158815387962000, 9254768770160124288000, 769237071909157579108571190000, 96986285294151066094112970262797953280, 19092174983817380047229162651397270697765056000
OFFSET
1,10
LINKS
CROSSREFS
Column k=9 of A008300.
Sequence in context: A179065 A213872 A227672 * A071552 A181726 A195394
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 06 2010
STATUS
approved