A232876 Number of (n+1)X(6+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..6+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing

81, 1235, 26553, 706994, 16272765, 330663907, 5853344894, 94722968640

Offset

1,1

Comments

Column 6 of A232877

Links

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

Example

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

Crossrefs

Sequence in context: A230677 A231994 A236790 * A378164 A224355 A016768

Adjacent sequences: A232873 A232874 A232875 * A232877 A232878 A232879

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved