A298558 Number of nX6 0..1 arrays with every element equal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

5, 604, 3079, 19843, 138774, 983554, 6852589, 48019258, 337105690, 2364533628, 16590006949, 116460022333, 817434984411, 5737251249817, 40271223099145, 282675763183686, 1984158776679139, 13927395646417519, 97760842271830442

Offset

1,1

Comments

Column 6 of A298560.

Links

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

Example

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

Crossrefs

Cf. A298560.

Sequence in context: A208298 A216077 A297949 * A298768 A299565 A298387

Adjacent sequences: A298555 A298556 A298557 * A298559 A298560 A298561

Keyword

nonn

Author

R. H. Hardin, Jan 21 2018

Status

approved