A318211 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

3, 21, 47, 245, 1042, 4794, 20502, 93848, 413543, 1866198, 8419364, 37903931, 171452530, 772835587, 3491017470, 15756245294, 71124997356, 321138172302, 1449613531826, 6544951016378, 29546522979051, 133392926489825

Offset

1,1

Comments

Column 5 of A318214.

Links

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

Example

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

Crossrefs

Cf. A318214.

Sequence in context: A217000 A360316 A034186 * A219069 A027499 A303834

Adjacent sequences: A318208 A318209 A318210 * A318212 A318213 A318214

Keyword

nonn

Author

R. H. Hardin, Aug 21 2018

Status

approved