A188980 Number of nX6 array permutations with each element moved but moved no more than a city block distance of two

13, 71865, 577290185, 2184414516364, 9298230791255360

Offset

1,1

Comments

Column 6 of A188981

Links

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

Example

Some solutions for 3X6
..1..0..3..9.10.17....1..0..3.15.10.11....1..0..3..4..9.11....1..0..3.10..9.17
..8..2.14..4.11.16....8..2..6..7.16..4....8..2..6..7..5.10....8..2.14.15.16..4
..7..6.12.13.15..5...14.12.13..9.17..5...13.12.15.14.17.16....6..7.12.13.11..5

Crossrefs

Sequence in context: A081317 A203675 A189251 * A348645 A022547 A273217

Adjacent sequences: A188977 A188978 A188979 * A188981 A188982 A188983

Keyword

nonn

Author

R. H. Hardin Apr 14 2011

Status

approved