A232875 Number of (n+1)X(5+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..5+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.

57, 637, 8988, 133532, 1604460, 16272765, 146502363, 1233883972, 9794613332, 73409666932

Offset

1,1

Comments

Column 5 of A232877

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..1..1..0..1..0....0..1..1..0..0..0....1..0..0..0..0..0....1..0..0..1..1..0
..0..0..1..1..1..0....0..0..0..0..0..1....0..1..1..1..1..0....0..0..1..1..0..1
..0..0..0..1..0..1....0..0..0..1..0..1....1..1..0..1..0..1....1..1..1..1..0..1
..1..0..0..0..1..1....0..1..0..0..1..1....0..0..1..0..1..1....0..1..1..0..1..1
..0..1..1..1..1..1....0..0..1..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1

Crossrefs

Sequence in context: A264240 A166392 A195606 * A084220 A060891 A241967

Adjacent sequences: A232872 A232873 A232874 * A232876 A232877 A232878

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved