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A233120 Number of (3+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..3+1} nondecreasing 1
464, 11741, 252958, 4736663, 79223727, 1206772195, 16999415895, 224076967817, 2789987429279, 33062492784645, 375228791717746, 4099407920673301, 43300262048665772, 443810526543291788, 4427981986413355672 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A233117

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A254693 A247852 A233352 * A115441 A028383 A263971

Adjacent sequences:  A233117 A233118 A233119 * A233121 A233122 A233123

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 04 2013

STATUS

approved

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Last modified August 2 06:52 EDT 2021. Contains 346411 sequences. (Running on oeis4.)