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A233119 Number of (2+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..2+1} nondecreasing 1
123, 1182, 9514, 67130, 427059, 2495541, 13620058, 70213894, 344898281, 1625999707, 7398978182, 32644783397, 140193521403, 587883227613, 2413542952866, 9723315619156, 38513619901599, 150236979229584 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 2 of A233117
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..0..1....0..0..0..2..2....0..1..1..1..2....0..0..1..2..1
..2..0..0..2..0....0..2..2..1..1....1..2..2..1..2....2..2..0..0..2
..0..1..1..0..2....2..1..1..1..2....2..1..1..2..2....0..1..2..2..2
CROSSREFS
Sequence in context: A074303 A077379 A135475 * A167231 A174173 A116935
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 04 2013
STATUS
approved

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Last modified June 20 11:48 EDT 2024. Contains 373527 sequences. (Running on oeis4.)