A172729 Number of n X n 0..3 arrays with row sums 15 and column sums 15

0, 0, 0, 0, 1, 20933840, 2310106618930215, 771548465309275841582080, 808064031263375768787771957383712, 2633262235838582855557285384905264898523904

Offset

1,6

Links

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

Crossrefs

Sequence in context: A254497 A254490 A253862 * A174115 A189123 A206108

Adjacent sequences: A172726 A172727 A172728 * A172730 A172731 A172732

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved