A298588 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 22, 28, 83, 441, 4620, 26343, 240692, 2382399, 22651784, 228684042, 2323731498, 23768659720, 244695207527, 2519577275383, 25999490891409, 268380670680809, 2771316197419832, 28623581964758979, 295655933016703826

Offset

1,2

Comments

Column 7 of A298589.

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

Crossrefs

Cf. A298589.

Sequence in context: A336585 A255222 A225337 * A129073 A092215 A239431

Adjacent sequences: A298585 A298586 A298587 * A298589 A298590 A298591

Keyword

nonn

Author

R. H. Hardin, Jan 22 2018

Status

approved