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, 1, 19, 11223, 10723968, 19442592272, 58092310437590, 265923890299028745

Offset

1,3

Comments

Column 4 of A265170.

Links

Table of n, a(n) for n=1..8.

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

Adjacent sequences: A265166 A265167 A265168 * A265170 A265171 A265172

Keyword

nonn

Author

R. H. Hardin, Dec 03 2015

Status

approved