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A232678 Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i*x(i,j), i=1..n+1} nondecreasing 1
86, 562, 2985, 14027, 59228, 229332, 831604, 2851809, 9325995, 29328607, 89150381, 263046025, 756504326, 2126823610, 5859328828, 15854904128, 42214959089, 110768292616, 286828441922, 733847705458, 1856968194517, 4651729423211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A232680

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=5

..0..0....0..0....1..1....1..2....0..0....0..0....0..2....3..0....1..0....1..0

..1..1....1..1....1..1....1..2....2..0....0..2....1..2....2..1....3..0....1..1

..3..0....1..1....3..0....2..3....3..0....0..2....1..2....0..2....2..1....1..1

..0..2....0..3....2..1....2..3....2..2....2..1....3..2....0..2....1..3....1..3

..1..2....2..2....1..3....2..3....1..3....2..3....1..3....0..2....1..3....3..2

..1..2....3..3....2..3....2..3....1..3....2..3....1..3....1..2....2..3....1..3

CROSSREFS

Sequence in context: A232754 A232760 A232680 * A272379 A262916 A262331

Adjacent sequences:  A232675 A232676 A232677 * A232679 A232680 A232681

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 27 2013

STATUS

approved

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Last modified August 5 07:29 EDT 2020. Contains 336209 sequences. (Running on oeis4.)