A232855 Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..2+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing

14, 45, 130, 336, 755, 1494, 2696, 4713, 8039, 13380, 21741, 33960, 51312, 75339, 108579, 154222, 216194, 298111, 404477, 540201, 713414, 932397, 1208728, 1553644, 1978226, 2495860, 3124911, 3887013, 4804956, 5907138, 7218216, 8769844

Offset

1,1

Comments

Column 2 of A232860

Links

R. H. Hardin, Table of n, a(n) for n = 1..109

Example

Some solutions for n=5
..0..0..1....1..1..0....0..0..0....0..1..0....0..0..0....0..0..0....0..0..0
..0..0..1....1..1..0....0..0..0....0..0..1....0..0..0....1..1..0....0..0..0
..1..0..1....0..0..1....0..0..1....1..0..1....1..0..0....0..0..1....0..0..0
..0..1..1....0..0..1....1..0..1....0..1..1....0..0..1....0..0..1....0..0..0
..1..1..1....0..0..1....1..0..1....0..1..1....0..1..1....1..1..1....1..0..1
..1..1..1....0..0..1....0..1..1....1..1..1....0..1..1....1..1..1....0..1..1

Crossrefs

Sequence in context: A090197 A010742 A232872 * A232791 A243384 A242579

Adjacent sequences: A232852 A232853 A232854 * A232856 A232857 A232858

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved