A172963 Number of 2*n X n 0..9 arrays with row sums 9 and column sums 18

1, 670, 133721236, 2043207067941480, 1047367983257881640491925, 10336768663024665454036757208361400, 1313075006655438005305387554231256477491331800

Offset

1,2

Links

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

Crossrefs

Sequence in context: A250670 A235101 A232388 * A351668 A218795 A281526

Adjacent sequences: A172960 A172961 A172962 * A172964 A172965 A172966

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved