A232885 Number of (n+1)X(2+1) 0..3 arrays x(i,j) with row sums sum{x(i,j), j=1..2+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

527, 12920, 280325, 5527323, 100945688, 1735612787, 28449815784, 448583973266, 6850991384966, 101901452399172, 1482350434485915

Offset

1,1

Comments

Column 2 of A232886

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=2
..1..0..3....1..0..2....1..0..3....2..1..2....0..3..0....0..2..2....0..0..0
..1..2..2....1..0..2....1..3..2....1..1..3....2..0..3....1..2..2....0..1..0
..3..3..2....0..3..3....3..3..3....1..3..3....0..2..3....3..2..2....0..0..3

Crossrefs

Sequence in context: A261075 A250754 A158364 * A085329 A157475 A373285

Adjacent sequences: A232882 A232883 A232884 * A232886 A232887 A232888

Keyword

nonn

Author

R. H. Hardin, Dec 02 2013

Status

approved