A303180 Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

32, 169, 382, 2569, 24751, 218980, 1803435, 15559135, 133939941, 1144618674, 9823326608, 84244031485, 722134766489, 6192893335862, 53101180247470, 455309781855204, 3904174200738897, 33476704903745926, 287049329224787342

Offset

1,1

Comments

Column 6 of A303182.

Links

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

Example

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

Crossrefs

Cf. A303182.

Sequence in context: A281467 A302621 A302413 * A188820 A181209 A231299

Adjacent sequences: A303177 A303178 A303179 * A303181 A303182 A303183

Keyword

nonn

Author

R. H. Hardin, Apr 19 2018

Status

approved