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A172827
Number of 2*n X n 0..4 arrays with row sums 9 and column sums 18
1
0, 0, 28681, 2449665403360, 4267335124853033521800, 106107338700855492388229350341800, 27866376170914402863794530315047399586447050
OFFSET
1,3
LINKS
CROSSREFS
Sequence in context: A179251 A122650 A172755 * A145686 A224576 A234835
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved