A318088 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 5, 7, 159, 493, 1945, 8525, 37863, 161424, 688404, 2927486, 12630400, 54054127, 233057675, 997644574, 4291179236, 18396315644, 79062911556, 339244535826, 1457115193095, 6254370569019, 26856741255383, 115296498702507

Offset

1,2

Comments

Column 5 of A318091.

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..1. .0..1..0..0..0. .0..1..0..0..0
..1..0..0..0..1. .1..0..0..0..1. .1..1..0..0..0. .1..1..1..1..1
..0..0..1..0..1. .1..1..0..0..0. .0..1..0..0..0. .0..0..1..0..0
..1..1..0..0..1. .0..0..1..1..0. .0..0..1..1..1. .1..1..0..0..1
..1..1..0..1..0. .1..0..0..0..1. .1..0..0..1..0. .1..1..0..1..1

Crossrefs

Cf. A318091.

Sequence in context: A158969 A083842 A164372 * A123536 A057177 A297535

Adjacent sequences: A318085 A318086 A318087 * A318089 A318090 A318091

Keyword

nonn

Author

R. H. Hardin, Aug 16 2018

Status

approved