A318079 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 11, 18, 34, 51, 126, 272, 616, 1347, 2910, 6602, 15218, 34152, 76465, 171830, 389133, 881565, 1994946, 4498694, 10161192, 22988303, 52066761, 117762774, 266167800, 601747214, 1361703901, 3081288330, 6969596507, 15760588028

Offset

1,1

Comments

Column 5 of A318082.

Links

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

Example

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

Crossrefs

Cf. A318082.

Sequence in context: A237767 A284324 A205856 * A000852 A000873 A213084

Adjacent sequences: A318076 A318077 A318078 * A318080 A318081 A318082

Keyword

nonn

Author

R. H. Hardin, Aug 15 2018

Status

approved