A233058 Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..1+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing

7, 16, 33, 66, 132, 265, 530, 1052, 2092, 4183, 8354, 16635, 33179, 66383, 132711, 264751, 528676, 1057904, 2115653, 4224206, 8439821, 16888361, 33778253, 67474289, 134850638, 269827760, 539703540, 1078399254, 2155614282, 4313028554

Offset

1,1

Comments

Column 1 of A233062

Links

R. H. Hardin, Table of n, a(n) for n = 1..68

Example

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

Crossrefs

Sequence in context: A101426 A296153 A190661 * A301721 A176449 A278945

Adjacent sequences: A233055 A233056 A233057 * A233059 A233060 A233061

Keyword

nonn

Author

R. H. Hardin, Dec 03 2013

Status

approved