A221802 Number of nX3 arrays of occupancy after each element moves to some king-move neighbor, without 2-loops or left turns

0, 56, 1107, 27692, 657057, 15710423, 374768765, 8941472101, 213311448213, 5088790842383, 121398147914074, 2896070141473471, 69088508450973319, 1648171881846136308, 39318701071705330022, 937984835115874609118

Offset

1,2

Comments

Column 3 of A221804

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

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

Crossrefs

Sequence in context: A243206 A278675 A114059 * A219583 A341429 A002009

Adjacent sequences: A221799 A221800 A221801 * A221803 A221804 A221805

Keyword

nonn

Author

R. H. Hardin Jan 26 2013

Status

approved