A188956 Number of nX5 array permutations with each element moved no more than a city block distance of two

31, 45288, 104735558, 151700751624, 229188213745576, 359214228037483580

Offset

1,1

Comments

Column 5 of A188958

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X5
..0..1..2..8..3....0..1..2..8..3....0..1..2..7..9....0..1..2..7..3
..5.10..7..9.13....6..7..5.13..4....6.10..5..4.14....6.10..9.14..4
.11..6.14.12..4...10.11.14.12..9...11.13.12..3..8...11..5.13.12..8

Crossrefs

Sequence in context: A262716 A033176 A263163 * A218142 A117579 A249584

Adjacent sequences: A188953 A188954 A188955 * A188957 A188958 A188959

Keyword

nonn

Author

R. H. Hardin Apr 14 2011

Status

approved