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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

R. H. Hardin, Table of n, a(n) for n = 1..99

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: A063636 A076501 A307569 * A099515 A056367 A082733

Adjacent sequences:  A200769 A200770 A200771 * A200773 A200774 A200775

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 22 2011

STATUS

approved

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Last modified August 4 00:59 EDT 2020. Contains 336201 sequences. (Running on oeis4.)