A233305 Number of (5+1) X (n+1) 0..1 arrays x(i,j) with row sums Sum_{j=1..n+1} x(i,j) nondecreasing, and column sums Sum_{i=1..5+1} i^2*x(i,j) nondecreasing.
129, 1739, 21856, 239330, 2353493, 20916337, 170084407, 1276676471, 8918067742, 58369345796, 360074924787, 2104323603081, 11702598417138, 62173159707627
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..1..1..0....0..0..0..1..0....0..0..0..0..1....0..0..0..1..1 ..0..0..1..0..1....0..0..1..1..1....0..0..1..0..1....1..0..1..1..0 ..0..1..0..1..0....0..1..1..1..0....1..0..1..0..0....1..0..1..0..1 ..0..0..1..1..0....1..0..1..0..1....0..0..1..1..1....1..0..1..0..1 ..1..0..1..0..1....0..1..0..1..1....0..1..0..1..1....1..1..0..1..1 ..0..1..0..1..1....0..0..1..1..1....0..0..1..1..1....0..1..1..1..1
Crossrefs
Cf. A233301.
Comments