A172750 Number of 2*n X n 0..3 arrays with row sums 5 and column sums 10.

0, 6, 81225, 19641294288, 37642786694586601, 407505677116244252111280, 19524684484378921494922081853046, 3444203485343904342478939367221160666880

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..18

Crossrefs

Sequence in context: A076913 A101439 A099112 * A086897 A034208 A003834

Adjacent sequences: A172747 A172748 A172749 * A172751 A172752 A172753

Keyword

nonn

Author

R. H. Hardin, Feb 06 2010

Status

approved