A172549 Number of 2*n X n 0..1 arrays with row sums 4 and column sums 8.

0, 0, 0, 1, 113400, 154700988750, 617944896216648000, 6637298299496411164868250, 176264656064665625137392456544800, 10697695830125272790880922760946584535000, 1383686991412953935264882502412625112170448000000, 358920655858354115406831875940612514848040679965214568750

Offset

1,5

Links

R. H. Hardin, Table of n, a(n) for n=1..25

Crossrefs

Sequence in context: A103113 A179922 A122511 * A172589 A172692 A172648

Adjacent sequences: A172546 A172547 A172548 * A172550 A172551 A172552

Keyword

nonn

Author

R. H. Hardin, Feb 06 2010

Status

approved