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A201228 Number of n X n 0..3 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 0
4, 2, 114, 1028, 420662, 33222962, 112920979339 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A201235

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

..0..2..1..1....0..1..2..1....1..1..2..3....0..1..3..3....1..1..1..2

..0..3..3..2....2..2..3..3....1..2..3..3....1..2..3..2....1..2..3..2

..2..2..3..3....1..3..2..3....1..3..2..2....1..2..2..3....2..3..3..3

CROSSREFS

Sequence in context: A277306 A201444 A236381 * A010319 A266069 A057167

Adjacent sequences:  A201225 A201226 A201227 * A201229 A201230 A201231

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 28 2011

STATUS

approved

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Last modified November 18 18:20 EST 2018. Contains 317324 sequences. (Running on oeis4.)