A300496 Number of nX6 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

32, 383, 1225, 4686, 19412, 77582, 291721, 1136238, 4513729, 17926620, 71353153, 285746599, 1148732959, 4625632297, 18656369104, 75377936665, 304942015454, 1234692860103, 5002729802528, 20282370113077, 82267894854426

Offset

1,1

Comments

Column 6 of A300498.

Links

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

Example

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

Crossrefs

Cf. A300498.

Sequence in context: A268999 A280602 A301321 * A300935 A300879 A301489

Adjacent sequences: A300493 A300494 A300495 * A300497 A300498 A300499

Keyword

nonn

Author

R. H. Hardin, Mar 07 2018

Status

approved