A293095 Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 9, 48, 554, 3334, 30837, 202363, 1733660, 12139768, 99907487, 729039938, 5866737162, 43944684689, 349284676982, 2660349798813, 21006556689388, 161738436141669, 1272996087653588, 9871903975910464, 77596716393162478

Offset

1,2

Comments

Column 3 of A293100.

Links

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

Example

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

Crossrefs

Cf. A293100.

Sequence in context: A073584 A007037 A179280 * A283092 A249780 A140891

Adjacent sequences: A293092 A293093 A293094 * A293096 A293097 A293098

Keyword

nonn

Author

R. H. Hardin, Sep 30 2017

Status

approved