A203451 Number of (n+1)X8 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing

512, 1624, 42112, 1371532, 58336803, 2396938985, 91479447926, 3140066953229, 96597454311425, 2670704330646619, 66787322753262716, 1521429379945770028, 31792318842649436230, 613337883329825690251, 10987780969990080992081

Offset

1,1

Comments

Column 7 of A203452

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=3
..0..0..0..0..1..0..0..0....0..1..0..0..0..0..0..1....0..0..0..0..0..1..1..1
..0..0..1..1..0..1..1..1....1..0..1..1..1..1..1..1....0..0..0..0..1..1..1..1
..1..1..0..0..1..0..1..1....0..1..1..1..1..1..1..0....0..0..1..1..0..0..1..1
..1..1..0..1..0..1..0..1....1..1..0..0..0..0..1..1....0..1..1..1..1..0..0..1

Crossrefs

Sequence in context: A220583 A195092 A235192 * A251192 A251187 A223333

Adjacent sequences: A203448 A203449 A203450 * A203452 A203453 A203454

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved