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A172662 Number of 2*n X n 0..2 arrays with row sums n and column sums 2*n 1
1, 19, 5881, 115321795, 101471705778601, 5520471267708881730181, 17949532724881770551236183389177, 3781994369388530584295658367829503216546371 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

Sequence in context: A271588 A233464 A145214 * A201303 A013724 A067267

Adjacent sequences:  A172659 A172660 A172661 * A172663 A172664 A172665

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified October 6 05:47 EDT 2022. Contains 357261 sequences. (Running on oeis4.)