A172768 Number of 3*n X 9 0..3 arrays with row sums 3 and column sums n

1680, 747558000, 772200774683520, 1182802402030354182000, 2275745987915517509338826880, 5078640963785630003833500263433600, 12577849178653907149465594061673565824000

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n=1..24

Crossrefs

Sequence in context: A172562 A172568 A172673 * A172667 A221204 A145292

Adjacent sequences: A172765 A172766 A172767 * A172769 A172770 A172771

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved