A316550 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

13, 61, 69, 187, 621, 1811, 5265, 17004, 54443, 174625, 570128, 1895824, 6316710, 21041042, 70427761, 236421633, 794054630, 2667992733, 8973021817, 30195493472, 101625420906, 342080623297, 1151711930432, 3878002944531, 13058419595537

Offset

1,1

Comments

Column 6 of A316552.

Links

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

Example

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

Crossrefs

Cf. A316552.

Sequence in context: A305250 A304542 A228558 * A244923 A146764 A336794

Adjacent sequences: A316547 A316548 A316549 * A316551 A316552 A316553

Keyword

nonn

Author

R. H. Hardin, Jul 06 2018

Status

approved