A233367 Number of (2+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing

14, 46, 113, 250, 530, 1043, 1939, 3422, 5802, 9490, 15005, 23117, 34764, 51097, 73611, 104127, 144806, 198364, 268178, 358188, 473002, 618350, 800556, 1026633, 1305256, 1646531, 2061507, 2562949, 3165957, 3886739, 4742930, 5756595, 6950779

Offset

1,1

Comments

Row 2 of A233366

Links

R. H. Hardin, Table of n, a(n) for n = 1..63

Example

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

Crossrefs

Sequence in context: A039368 A043191 A043971 * A211919 A233361 A243039

Adjacent sequences: A233364 A233365 A233366 * A233368 A233369 A233370

Keyword

nonn

Author

R. H. Hardin, Dec 08 2013

Status

approved