A301538 Number of n X 5 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.

8, 21, 61, 212, 658, 2417, 9037, 33526, 125626, 477972, 1824213, 6971325, 26702279, 102479158, 393541270, 1511848952, 5810405859, 22336911663, 85879249631, 330208289450, 1269748921864, 4882763327280, 18776842367003, 72208138689837

Offset

1,1

Comments

Column 5 of A301541.

Links

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

Example

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

Crossrefs

Cf. A301541.

Sequence in context: A066859 A227653 A296198 * A192299 A080144 A241522

Adjacent sequences: A301535 A301536 A301537 * A301539 A301540 A301541

Keyword

nonn

Author

R. H. Hardin, Mar 23 2018

Status

approved