A203964 Number of (n+1)X8 0..2 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

56219, 7559349, 7690733410, 10649020852202, 14200017143149033, 16109192511515893766, 15590622229636053238362, 13061580869765431482480774

Offset

1,1

Comments

Column 7 of A203965

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for n=4
..0..1..1..2..1..2..0..1....1..0..2..0..0..2..2..1....0..2..2..2..2..1..2..1
..1..1..1..0..1..0..2..1....0..2..0..2..2..1..1..2....2..1..1..1..1..2..1..2
..2..1..1..2..1..2..1..2....2..0..2..1..1..0..2..1....2..1..1..2..2..1..2..2
..2..1..2..1..2..1..2..1....1..2..1..0..1..1..0..1....1..2..2..0..1..2..1..2
..1..2..1..2..1..2..1..2....1..2..1..1..0..1..2..1....2..2..2..2..1..1..2..0

Crossrefs

Sequence in context: A252020 A360188 A031655 * A198165 A244294 A234488

Adjacent sequences: A203961 A203962 A203963 * A203965 A203966 A203967

Keyword

nonn

Author

R. H. Hardin Jan 08 2012

Status

approved