A269645 - OEIS

A269645

Number of nX3 arrays containing 3 copies of 0..n-1 avoiding the pattern down-up in every row and equal-up in every column.

1, 14, 574, 68876, 18375702, 9213264418, 7725775442284

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

OFFSET

1,2

COMMENTS

Column 3 of A269646.

LINKS

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 02 2016

STATUS

approved