A233361 Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..2+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing

14, 46, 139, 364, 849, 1928, 4281, 9315, 19741, 40967, 84289, 172238, 349179, 700980, 1406113, 2817168, 5640787, 11280975, 22553200, 45097300, 90149110, 180171641, 360001235, 719290309, 1437274041, 2870143830, 5726092077, 11425527566

Offset

1,1

Comments

Column 2 of A233366

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Sequence in context: A043971 A233367 A211919 * A243039 A243385 A242580

Adjacent sequences: A233358 A233359 A233360 * A233362 A233363 A233364

Keyword

nonn

Author

R. H. Hardin, Dec 08 2013

Status

approved