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A200852 Number of nX2 0..4 arrays with every row and column running average nondecreasing rightwards and downwards 1
15, 105, 647, 3728, 20656, 111222, 586908, 3047226, 15620118, 79228317, 398364306, 1988133262, 9858922561, 48617189158, 238575216150, 1165684780558, 5673701149975, 27520684819357, 133080240201400, 641746039540686 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A200858
LINKS
EXAMPLE
Some solutions for n=3
..1..3....0..1....0..0....0..3....0..3....0..0....0..1....0..2....1..1....0..0
..1..4....0..1....2..3....0..3....2..3....1..4....0..3....2..2....3..3....1..4
..4..4....0..1....3..4....3..3....4..4....1..3....3..4....2..4....3..4....4..4
CROSSREFS
Sequence in context: A000478 A055848 A202493 * A266503 A058085 A060218
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 23 2011
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)