A232776 Number of (n+1)X(2+1) 0..2 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

118, 1176, 9607, 71172, 474271, 2888324, 16411386, 87759236, 445218879, 2163198554, 10117422745, 45757881000, 201068414833, 861138559305, 3604319480707, 14783116721340, 59536205151486

Offset

1,1

Comments

Column 2 of A232778

Links

Table of n, a(n) for n=1..17.

Example

Some solutions for n=4
..0..1..1....0..0..2....1..0..1....1..0..0....1..1..1....0..1..2....0..0..0
..0..2..1....2..1..2....0..0..2....1..1..0....1..0..2....0..2..2....1..1..0
..1..0..2....2..1..2....2..1..1....0..2..0....2..1..1....2..1..2....2..1..0
..2..1..1....0..2..2....1..2..1....1..1..2....1..0..2....2..2..2....1..0..2
..0..2..2....0..2..2....0..2..2....2..1..2....0..2..1....2..2..2....0..2..2

Crossrefs

Sequence in context: A261464 A250793 A334646 * A175876 A220715 A230917

Adjacent sequences: A232773 A232774 A232775 * A232777 A232778 A232779

Keyword

nonn

Author

R. H. Hardin, Nov 30 2013

Status

approved