A172914 Number of 3*n X n 0..6 arrays with row sums 6 and column sums 18

1, 9331, 69327885583, 69404300198350892236, 3373513537183933018216388397350, 4081159676302022080974044453167358453805921, 76587973156243192496223417009664279130517333252040973460

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..11

Crossrefs

Sequence in context: A241935 A229435 A022223 * A209792 A004934 A004954

Adjacent sequences: A172911 A172912 A172913 * A172915 A172916 A172917

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved