A188957 Number of nX6 array permutations with each element moved no more than a city block distance of two

73, 532224, 6513224285, 47085945014364, 359214228037483580

Offset

1,1

Comments

Column 6 of A188958

Links

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

Example

Some solutions for 3X6
..0..1..2..3..9.17....0..1..2..3..5..4....0..1..2..3..4.11....0..1..2..3..5..4
..6..8.13..4.15..5....6..8..7.14.10.11....6..8..7.10.16..5....6..8..7.14.15.11
..7.12.14.16.10.11...13.15.12.17..9.16...14.12.13..9.17.15...12.13.16.10..9.17

Crossrefs

Sequence in context: A232457 A262662 A291991 * A159438 A291992 A076848

Adjacent sequences: A188954 A188955 A188956 * A188958 A188959 A188960

Keyword

nonn

Author

R. H. Hardin Apr 14 2011

Status

approved