A317264 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

13, 61, 91, 440, 1964, 7477, 33695, 166051, 806730, 4131259, 21892531, 116959279, 630802076, 3442833706, 18885784717, 103830921115, 572652396281, 3164881433181, 17506564565665, 96915089142427, 536885951695389

Offset

1,1

Comments

Column 6 of A317266.

Links

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

Example

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

Crossrefs

Cf. A317266.

Sequence in context: A306127 A118711 A316309 * A028874 A087106 A142402

Adjacent sequences: A317261 A317262 A317263 * A317265 A317266 A317267

Keyword

nonn

Author

R. H. Hardin, Jul 25 2018

Status

approved