A172574 Number of 3*n X 2*n 0..1 arrays with row sums 6 and column sums 9

0, 0, 1, 31082452632000, 91880966659006902855367890000, 4623755659802671553551698062433487687144266000, 3253924815644553490177047049527865204808456401213720382274024000

Offset

1,4

Links

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

Crossrefs

Sequence in context: A121843 A206852 A171264 * A229069 A122126 A318575

Adjacent sequences: A172571 A172572 A172573 * A172575 A172576 A172577

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved