A188961 Number of nX4 array permutations with each element moved by a city block distance of no more than three.

24, 24024, 75764664, 251096032912, 573780546403024

Offset

1,1

Comments

Column 4 of A188962

Links

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

Example

Some solutions for 3X4
..0..1..5..3....0..1..5..3....0..1..5..3....0..1..5.10....0..1..5.10
..6..8..9..2....7.11..4..2....9.10.11..7....7.11..3..4....2..7..3..9
.11..7..4.10...10..9..6..8....4..6..2..8....8..6..2..9....6..8..4.11

Crossrefs

Sequence in context: A167066 A166338 A258874 * A153303 A272095 A188952

Adjacent sequences: A188958 A188959 A188960 * A188962 A188963 A188964

Keyword

nonn

Author

R. H. Hardin, Apr 14 2011

Status

approved