A232826 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*x(i,j), i=1..n+1} nondecreasing

14, 48, 128, 316, 760, 1736, 3843, 8263, 17414, 36175, 74367, 151657, 307760, 622363, 1252908, 2517273, 5054285, 10135115, 20312547, 40696305, 81494762, 163130913, 326436190, 653032643, 1306255533, 2613178341, 5226868694, 10452686889

Offset

1,1

Comments

Column 2 of A232831

Links

R. H. Hardin, Table of n, a(n) for n = 1..51

Example

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

Crossrefs

Sequence in context: A205475 A205753 A332606 * A205468 A195966 A337421

Adjacent sequences: A232823 A232824 A232825 * A232827 A232828 A232829

Keyword

nonn

Author

R. H. Hardin, Nov 30 2013

Status

approved