A233306 Number of (6+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..6+1} nondecreasing.

258, 5964, 135636, 2694620, 48504411, 789640245, 11764401320, 161499728247, 2058135563687

Offset: 1

Author

R. H. Hardin, Dec 07 2013

Keywords

• nonn

Comments

Row 6 of A233301

Examples

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