A172663 Number of 3*n X n 0..2 arrays with row sums 6 and column sums 18

0, 0, 1, 6152037276, 2630024635942177123650, 16157198427400511406055803977773761, 1126052188643363954802820836947166068046894450600

Offset

1,4

Links

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

Crossrefs

Sequence in context: A046894 A145552 A290502 * A210727 A004675 A011524

Adjacent sequences: A172660 A172661 A172662 * A172664 A172665 A172666

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved