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A265169 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no equal horizontal or vertical neighbors and new values introduced sequentially from 0. 0
0, 1, 19, 11223, 10723968, 19442592272, 58092310437590, 265923890299028745 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Column 4 of A265170.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..2..1....0..1..2..3....0..1..2..0....0..1..0..2....0..1..2..3
..3..2..1..0....2..3..1..0....3..2..1..3....1..3..1..3....1..2..3..0
..2..3..0..3....3..2..0..3....1..0..3..2....2..0..2..1....0..1..2..3
..3..0..1..2....1..0..1..2....0..2..1..3....3..2..3..0....2..3..1..0
CROSSREFS
Cf. A265170.
Sequence in context: A260005 A276739 A093400 * A174306 A270069 A357252
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2015
STATUS
approved

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Last modified July 21 04:02 EDT 2024. Contains 374463 sequences. (Running on oeis4.)