A172950 Number of n X n 0..8 arrays with row sums n and column sums n.

1, 3, 55, 10147, 22069251, 602351808741, 215717608046511873, 1046591482728407939338275, 70413374705157290394475959841507, 66845086415203272975671039831846565573553, 907435770528631749557522431838214793816374839499333, 178029817375848587713990176979287637451630553012446926384989301

Offset

1,2

Links

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

Crossrefs

Sequence in context: A172873 A172907 A172932 * A172962 A110058 A387817

Adjacent sequences: A172947 A172948 A172949 * A172951 A172952 A172953

Keyword

nonn

Author

R. H. Hardin, Feb 06 2010

Status

approved