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A200772 Number of nX3 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other 1
2, 5, 13, 31, 77, 217, 553, 1438, 3849, 9634, 24872, 65658, 165619, 425229, 1108871, 2787741, 7090082, 18273124, 45935694, 116433625, 297919225, 747625324, 1886048964, 4791865798, 11998842755, 30184656867, 76352766306, 190890209361 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A200777
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0....0..1..1....0..0..1....0..0..1....0..0..1....0..1..1....0..0..2
..0..2..2....0..2..1....0..0..2....0..1..1....0..1..2....0..1..1....0..0..2
..1..1..2....0..2..1....1..2..2....0..2..1....0..1..2....0..2..2....1..1..2
..1..1..2....0..2..2....1..1..2....2..2..2....1..2..2....0..2..2....1..1..2
CROSSREFS
Sequence in context: A369434 A349276 A307569 * A099515 A056367 A082733
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 22 2011
STATUS
approved

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Last modified April 10 01:29 EDT 2024. Contains 371563 sequences. (Running on oeis4.)