A172567 Number of 3*n X n 0..1 arrays with row sums 4 and column sums 12

0, 0, 0, 1, 168168000, 666569141498660400, 12218892645550878420052920000, 959794291357783500093926796260896462300, 289360589460480315988823313632867603848637000544000

Offset

1,5

Links

R. H. Hardin, Table of n, a(n) for n=1..17

Crossrefs

Sequence in context: A251473 A102337 A295456 * A172590 A172693 A172784

Adjacent sequences: A172564 A172565 A172566 * A172568 A172569 A172570

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved