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A172646 Number of 2*n X n 0..2 arrays with row sums 10 and column sums 20 1
0, 0, 0, 0, 1, 3536978063850, 134169254007831527780970675, 19578536057961112914067888563728861113920, 13935136089336578003371937448487249553674496163189003360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

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

CROSSREFS

Sequence in context: A080123 A209834 A230485 * A222558 A290504 A172630

Adjacent sequences:  A172643 A172644 A172645 * A172647 A172648 A172649

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified June 17 18:57 EDT 2019. Contains 324198 sequences. (Running on oeis4.)