A188965 Number of nX4 array permutations with each element moved and moved by a city block distance of no more than three.

9, 8132, 22666641, 62394485617, 109564294856817

Offset

1,1

Comments

Column 4 of A188966

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X4
..1..0..3.10....1..0..7.11....1..0..7.10....1..0..7..6....1..0..7..5
..6..7..4..2....2..9..4..3....6..3..4.11....5..4..3.10....2.10..8..4
.11..8..9..5...10..5..6..8....5..2..8..9...11..8..9..2....9..6.11..3

Crossrefs

Sequence in context: A060761 A053975 A191961 * A367517 A327897 A249837

Adjacent sequences: A188962 A188963 A188964 * A188966 A188967 A188968

Keyword

nonn

Author

R. H. Hardin, Apr 14 2011

Status

approved