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A224167 Number of n X n 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing 0
4, 100, 4739, 272130, 16625026, 1038484760, 65713691148, 4209750150062, 273303096405547 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A224173

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A165518 A127776 A266524 * A223858 A223981 A224385

Adjacent sequences:  A224164 A224165 A224166 * A224168 A224169 A224170

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 31 2013

STATUS

approved

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Last modified January 24 00:05 EST 2022. Contains 350515 sequences. (Running on oeis4.)