A318065 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

3, 249, 4003, 76927, 1405892, 25994502, 479322719, 8844178475, 163160290206, 3010153978306, 55533977404140, 1024542272140095, 18901694319609505, 348715820426469896, 6433429576139159715, 118689815703325535679

Offset

1,1

Comments

Column 5 of A318068.

Links

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

Example

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

Crossrefs

Cf. A318068.

Sequence in context: A157573 A082717 A157777 * A349644 A124875 A226986

Adjacent sequences: A318062 A318063 A318064 * A318066 A318067 A318068

Keyword

nonn

Author

R. H. Hardin, Aug 15 2018

Status

approved