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 A269504 Number of nX3 arrays containing 3 copies of 0..n-1 avoiding the pattern down-up in every row and column. 0
 1, 14, 420, 18332, 1261420, 134871120, 21338020496 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A269505. LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=4 ..0..0..3. .0..2..1. .0..2..1. .2..2..1. .0..2..1. .0..0..1. .0..0..1 ..1..1..2. .0..3..1. .1..2..2. .0..2..3. .1..2..3. .3..2..2. .3..2..2 ..2..3..1. .1..3..3. .3..3..3. .0..3..1. .3..3..2. .1..3..2. .2..3..1 ..3..2..0. .0..2..2. .0..0..1. .1..3..0. .0..0..1. .1..3..0. .0..3..1 CROSSREFS Cf. A269505. Sequence in context: A275025 A236156 A258392 * A033815 A187358 A103916 Adjacent sequences: A269501 A269502 A269503 * A269505 A269506 A269507 KEYWORD nonn AUTHOR R. H. Hardin, Feb 28 2016 STATUS approved

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Last modified May 30 03:43 EDT 2023. Contains 363044 sequences. (Running on oeis4.)