A232830 Number of (n+1)X(6+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..6+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

76, 1736, 32279, 706823, 15664761, 330749381, 6633342932, 126048354885

Offset

1,1

Comments

Column 6 of A232831

Links

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

Example

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

Crossrefs

Sequence in context: A270960 A060190 A156399 * A278092 A153177 A166191

Adjacent sequences: A232827 A232828 A232829 * A232831 A232832 A232833

Keyword

nonn

Author

R. H. Hardin, Nov 30 2013

Status

approved