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A200773 Number of nX4 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
7, 20, 31, 342, 1368, 1806, 18801, 66784, 80772, 855668, 3041384, 3594128, 37388832, 130414591, 152057520, 1585602417, 5503438740, 6353866245, 65731117389, 226849040721, 260912168378, 2698875915314, 9278417689608, 10609858568929 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A200777

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..43

EXAMPLE

Some solutions for n=5

..0..0..1..1....0..0..0..1....0..0..0..1....0..0..0..1....0..0..0..0

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

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

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

..1..1..2..2....2..2..2..2....1..2..2..2....1..2..2..2....2..2..2..2

CROSSREFS

Sequence in context: A134863 A214924 A319966 * A269044 A063235 A063151

Adjacent sequences:  A200770 A200771 A200772 * A200774 A200775 A200776

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 22 2011

STATUS

approved

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Last modified October 17 21:37 EDT 2019. Contains 328134 sequences. (Running on oeis4.)