A316820 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

32, 1576, 33046, 811854, 20825877, 513913591, 12835573991, 320914969638, 8003158157235, 199783413517343, 4987095498982872, 124471284530963758, 3106865004006385929, 77548308031923753562, 1935612814492833937289

Offset

1,1

Comments

Column 6 of A316822.

Links

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

Example

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

Crossrefs

Cf. A316822.

Sequence in context: A317116 A305528 A317002 * A317570 A240459 A333603

Adjacent sequences: A316817 A316818 A316819 * A316821 A316822 A316823

Keyword

nonn

Author

R. H. Hardin, Jul 14 2018

Status

approved