A305592 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

64, 1709, 28530, 544280, 9637513, 175683720, 3190446497, 57940960729, 1053163229940, 19149261238587, 348129370407358, 6328789167931744, 115060972846874058, 2091893536440561148, 38031724493094942507

Offset

1,1

Comments

Column 7 of A305593.

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..1. .0..0..1..1..0..0..0. .0..0..0..0..1..0..0
..0..0..1..0..0..1..0. .0..0..0..1..1..0..0. .0..0..0..1..1..0..1
..0..0..0..1..0..0..0. .0..0..0..0..0..0..1. .0..0..1..1..1..1..1
..0..0..1..0..1..0..0. .0..0..0..0..1..0..0. .0..0..0..1..1..0..0
..0..0..1..1..1..0..0. .0..0..0..0..1..1..1. .0..0..1..1..1..0..0

Crossrefs

Cf. A305593.

Sequence in context: A316208 A305775 A317124 * A317010 A316875 A317603

Adjacent sequences: A305589 A305590 A305591 * A305593 A305594 A305595

Keyword

nonn

Author

R. H. Hardin, Jun 05 2018

Status

approved