A232871 Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{j^2*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing

7, 14, 25, 39, 57, 81, 112, 151, 195, 247, 309, 382, 467, 558, 661, 778, 910, 1054, 1211, 1384, 1574, 1783, 2006, 2246, 2506, 2787, 3090, 3408, 3748, 4112, 4501, 4915, 5349, 5807, 6293, 6808, 7352, 7918, 8513, 9139, 9798, 10489, 11204, 11951, 12733, 13551

Offset

1,1

Comments

Column 1 of A232877

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A340797 A340796 A030414 * A232854 A232790 A095894

Adjacent sequences: A232868 A232869 A232870 * A232872 A232873 A232874

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved