A232889 Number of (3+1)X(n+1) 0..3 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..3+1} nondecreasing

3473, 280325, 18692802, 1063222171, 53153482029, 2386893457725, 97901143731315, 3715353311254930, 131807806047496905, 4407809340492322944

Offset

1,1

Comments

Row 3 of A232886

Links

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

Example

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

Crossrefs

Sequence in context: A237546 A253365 A109484 * A328817 A159215 A176380

Adjacent sequences: A232886 A232887 A232888 * A232890 A232891 A232892

Keyword

nonn

Author

R. H. Hardin, Dec 02 2013

Status

approved