A172546 Number of 2*n X n 0..1 arrays with row sums 10 and column sums 20

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 548828480360160000, 4237239732072431006302896746240010000, 22899532804595954935644287742940961780296483414339200000

Offset

1,11

Links

R. H. Hardin, Table of n, a(n) for n=1..14

Crossrefs

Sequence in context: A376261 A172565 A360140 * A374949 A256312 A173445

Adjacent sequences: A172543 A172544 A172545 * A172547 A172548 A172549

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved