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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

R. H. Hardin, Table of n, a(n) for n=1..10

CROSSREFS

Sequence in context: A179251 A122650 A172755 * A145686 A224576 A234835

Adjacent sequences:  A172824 A172825 A172826 * A172828 A172829 A172830

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified July 23 21:46 EDT 2021. Contains 346265 sequences. (Running on oeis4.)