A233118 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*x(i,j), i=1..1+1} nondecreasing

29, 112, 365, 1079, 2969, 7697, 19161, 46225, 108546, 249922, 566434, 1265910, 2799170, 6135198, 13338545, 28815311, 61913201, 132347696, 281740017, 597597160, 1263139459, 2662173760, 5596312274, 11734716808, 24553681879

Offset

1,1

Comments

Row 1 of A233117

Links

R. H. Hardin, Table of n, a(n) for n = 1..190

Example

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

Crossrefs

Sequence in context: A209880 A232784 A232849 * A338023 A139946 A093359

Adjacent sequences: A233115 A233116 A233117 * A233119 A233120 A233121

Keyword

nonn

Author

R. H. Hardin, Dec 04 2013

Status

approved