A233375 Number of (1+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..1+1} nondecreasing

28, 98, 286, 729, 1678, 3555, 7048, 13215, 23641, 40618, 67389, 108421, 169774, 259497, 388144, 569338, 820471, 1163461, 1625690, 2240996, 3050879, 4105789, 5466649, 7206472, 9412271, 12187059, 15652184, 19949789, 25245633, 31732052

Offset

1,1

Comments

Row 1 of A233374

Links

R. H. Hardin, Table of n, a(n) for n = 1..186

Example

Some solutions for n=5
..1..0..1..1..1..1....0..0..1..1..1..2....0..2..2..0..1..1....1..1..1..1..0..1
..0..1..2..2..2..2....0..0..2..2..2..2....0..0..1..2..2..2....0..1..1..1..2..2

Crossrefs

Sequence in context: A211495 A233374 A231230 * A219691 A212777 A130281

Adjacent sequences: A233372 A233373 A233374 * A233376 A233377 A233378

Keyword

nonn

Author

R. H. Hardin, Dec 08 2013

Status

approved