A286211 Number of n X 3 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 17, 52, 684, 2128, 34896, 123541, 1891998, 7565509, 106100847, 470286934, 6070072444, 29342743563, 352400491431, 1833102380708, 20699165970978, 114576111229319, 1227555854005393, 7163217232141967, 73387852919316000

Offset

1,2

Comments

Column 3 of A286216.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..1..0..0. .1..0..1. .0..1..1. .1..0..0. .1..1..0. .0..1..0. .0..0..1
..0..1..0. .0..0..1. .1..0..0. .1..0..0. .1..0..0. .0..1..0. .0..0..0
..0..1..1. .0..0..0. .1..0..0. .0..0..0. .0..0..0. .1..1..0. .0..0..1
..0..0..1. .0..1..1. .0..1..0. .1..0..1. .1..0..0. .1..0..0. .1..1..0

Crossrefs

Cf. A286216.

Sequence in context: A113915 A042295 A041564 * A213997 A062342 A295869

Adjacent sequences: A286208 A286209 A286210 * A286212 A286213 A286214

Keyword

nonn

Author

R. H. Hardin, May 04 2017

Status

approved