A172565 Number of 3*n X n 0..1 arrays with row sums 7 and column sums 21

0, 0, 0, 0, 0, 0, 1, 369398958888960000, 2343976695927269878444049332219968000, 27470008383944006158001488120005460494368265540960000000, 960689698603154580472955204587017348140176811923434228399447157783872000000

Offset

1,8

Links

R. H. Hardin, Table of n, a(n) for n=1..12

Crossrefs

Sequence in context: A183062 A239923 A104838 * A360140 A172546 A256312

Adjacent sequences: A172562 A172563 A172564 * A172566 A172567 A172568

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved