A299941 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 3281, 5631, 22819, 106323, 495413, 2237911, 10459697, 49578223, 231751585, 1085770920, 5127919044, 24217578595, 114333621160, 541012865109, 2564516220733, 12167297494073, 57801712976511, 275029208611801

Offset

1,1

Comments

Column 7 of A299942.

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

Crossrefs

Cf. A299942.

Sequence in context: A298286 A299358 A299179 * A017439 A220744 A298194

Adjacent sequences: A299938 A299939 A299940 * A299942 A299943 A299944

Keyword

nonn

Author

R. H. Hardin, Feb 22 2018

Status

approved