A172646 Number of 2*n X n 0..2 arrays with row sums 10 and column sums 20

0, 0, 0, 0, 1, 3536978063850, 134169254007831527780970675, 19578536057961112914067888563728861113920, 13935136089336578003371937448487249553674496163189003360

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