A300774 Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 19, 102, 735, 10374, 116954, 1413931, 17336190, 210669938, 2579232344, 31507335039, 385235115962, 4709579663351, 57576031578161, 703919626655464, 8605843851625144, 105213106646598954, 1286307937687623392

Offset

1,2

Comments

Column 6 of A300776.

Links

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

Example

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

Crossrefs

Cf. A300776.

Sequence in context: A062643 A245528 A253218 * A054658 A023296 A139948

Adjacent sequences: A300771 A300772 A300773 * A300775 A300776 A300777

Keyword

nonn

Author

R. H. Hardin, Mar 12 2018

Status

approved