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A269478
Number of n X 3 arrays containing 3 copies of 0..n-1 avoiding the pattern down-up in every row and equal-up in every column.
0
1, 14, 574, 36028, 3572724, 548242672, 121353398100
OFFSET
1,2
COMMENTS
Column 3 of A269479.
EXAMPLE
Some solutions for n=4
..0..1..3. .0..1..0. .2..1..1. .0..1..2. .2..1..0. .1..0..2. .0..1..2
..1..3..3. .1..2..2. .0..1..2. .0..3..3. .3..1..0. .1..3..2. .1..2..3
..2..2..1. .2..3..3. .0..2..3. .2..3..1. .3..2..1. .3..2..3. .3..0..2
..0..2..0. .3..1..0. .0..3..3. .2..1..0. .3..2..0. .0..1..0. .3..0..1
CROSSREFS
Cf. A269479.
Sequence in context: A166185 A361695 A349766 * A269645 A232369 A218412
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2016
STATUS
approved