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A233121 Number of (4+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..4+1} nondecreasing 0
1636, 110078, 6419678, 326851781, 14834218690, 610630273520, 23120077836128, 814295555596585 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A233117

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

..0..1..1....1..1..0....0..0..0....1..1..1....0..0..2....1..1..1....0..0..2

..0..1..1....0..1..1....2..0..1....1..0..2....0..2..1....1..0..2....1..0..2

..0..2..0....1..0..1....1..1..2....1..2..1....0..2..1....2..0..1....2..0..2

..2..0..1....2..1..1....1..2..1....1..1..2....0..2..1....0..2..2....0..2..2

..1..1..2....1..2..2....2..2..2....2..2..1....1..0..2....2..2..1....2..2..0

CROSSREFS

Sequence in context: A052455 A252619 A224461 * A054808 A218010 A298075

Adjacent sequences:  A233118 A233119 A233120 * A233122 A233123 A233124

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 04 2013

STATUS

approved

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Last modified August 1 07:45 EDT 2021. Contains 346384 sequences. (Running on oeis4.)