A203936 Number of (n+1)X(n+1) 0..5 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) nondecreasing in column and row directions, respectively

406, 91396, 32094464, 14543414270, 7208336070660, 3601865763979034, 1772878084052954152

Offset

1,1

Comments

Diagonal of A203944

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=4
..1..0..4..3..4....1..4..0..5..5....1..5..2..3..3....4..5..4..4..4
..2..4..3..4..3....4..1..5..5..5....4..2..5..4..4....5..4..5..5..5
..3..3..4..3..5....2..5..5..5..5....1..5..4..5..5....4..5..5..5..5
..3..5..4..5..5....2..5..5..5..5....3..4..5..5..5....4..5..5..5..5
..5..4..5..5..5....2..5..5..5..5....5..4..5..5..5....4..5..5..5..5

Crossrefs

Sequence in context: A233052 A210329 A317982 * A172891 A172921 A063138

Adjacent sequences: A203933 A203934 A203935 * A203937 A203938 A203939

Keyword

nonn

Author

R. H. Hardin Jan 08 2012

Status

approved