A318042 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 6, 86, 905, 10563, 116212, 1304057, 14683085, 165135266, 1856998899, 20884326520, 234874162302, 2641473216596, 29706814482309, 334092069568548, 3757304519668705, 42255828257649535, 475222320626098607

Offset

1,2

Comments

Column 5 of A318045.

Links

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

Example

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

Crossrefs

Cf. A318045.

Sequence in context: A358297 A209035 A230782 * A155654 A231165 A091881

Adjacent sequences: A318039 A318040 A318041 * A318043 A318044 A318045

Keyword

nonn

Author

R. H. Hardin, Aug 13 2018

Status

approved