A221791 Number of 6Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns

0, 0, 1, 105, 4131, 109702, 4781652, 220782560, 12043488477, 578442771884

Offset

1,4

Comments

Row 6 of A221787

Links

Table of n, a(n) for n=1..10.

Example

All solutions for n=3
..0..2..1
..1..2..0
..0..2..1
..1..2..0
..0..2..1
..1..2..0

Crossrefs

Sequence in context: A112490 A006361 A360275 * A210138 A075350 A165055

Adjacent sequences: A221788 A221789 A221790 * A221792 A221793 A221794

Keyword

nonn

Author

R. H. Hardin Jan 25 2013

Status

approved