A223993 - OEIS

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A223993

Number of n X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing

3, 31, 476, 7927, 132119, 2160036, 34534687, 540957770, 8329684774, 126518474741, 1901584578700, 28359907789963, 420651674953990, 6217185029060841, 91703594406693983

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A223999

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Some solutions for n=3

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

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

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