A301910 Number of 6Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

32, 1, 43, 26, 64, 532, 1934, 14860, 86638, 568382, 4029337, 27834481, 195991786, 1379526983, 9716584311, 68484812620, 482477672626, 3399467195980, 23952754983718, 168772425373008, 1189219611175938, 8379671227164002

Offset

1,1

Comments

Row 6 of A301906.

Links

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

Example

Some solutions for n=5
..0..1..1..0..1. .0..1..1..0..0. .0..1..1..0..0. .0..1..1..0..1
..1..1..1..0..1. .1..1..0..0..0. .1..1..0..0..1. .1..1..1..0..1
..0..1..1..0..1. .1..1..1..0..0. .0..1..1..0..0. .0..1..1..0..0
..1..1..1..0..1. .0..1..1..0..0. .1..1..0..0..1. .0..1..0..0..1
..0..1..1..0..0. .0..1..1..0..0. .1..1..1..0..0. .1..1..1..0..0
..1..1..0..0..1. .1..1..0..0..1. .1..1..0..0..1. .1..1..0..0..1

Crossrefs

Cf. A301906.

Sequence in context: A134203 A014777 A303323 * A302154 A221193 A103325

Adjacent sequences: A301907 A301908 A301909 * A301911 A301912 A301913

Keyword

nonn

Author

R. H. Hardin, Mar 28 2018

Status

approved