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A172662
Number of 2*n X n 0..2 arrays with row sums n and column sums 2*n.
2
1, 19, 5881, 115321795, 101471705778601, 5520471267708881730181, 17949532724881770551236183389177, 3781994369388530584295658367829503216546371
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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 August 29 23:34 EDT 2024. Contains 375520 sequences. (Running on oeis4.)