A232777 Number of (n+1)X(3+1) 0..2 arrays x(i,j) with row sums sum{j*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

387, 9607, 216153, 4315199, 77206290, 1254183756, 18751034097, 261028967823

Offset

1,1

Comments

Column 3 of A232778

Links

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

Example

Some solutions for n=2
..0..0..1..1....0..2..2..0....1..2..0..0....1..0..1..0....0..0..2..1
..0..0..0..2....1..2..0..2....0..1..1..0....0..1..0..2....0..0..2..2
..1..1..1..1....0..0..2..2....0..0..1..2....0..0..1..2....0..2..1..2

Crossrefs

Sequence in context: A116329 A273383 A038659 * A259695 A223193 A284147

Adjacent sequences: A232774 A232775 A232776 * A232778 A232779 A232780

Keyword

nonn

Author

R. H. Hardin, Nov 30 2013

Status

approved