A298781 Number of nX7 0..1 arrays with every element equal to 0, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

1, 22, 8, 76, 139, 2607, 9889, 75446, 868689, 7675611, 76328995, 771602616, 7685566410, 77998227871, 785605065928, 7947378593295, 80347627263007, 812287066601605, 8214879671287792, 83066600919438416, 840020904456433023

Offset

1,2

Comments

Column 7 of A298782.

Links

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

Example

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

Crossrefs

Cf. A298782.

Sequence in context: A298145 A298176 A113783 * A058402 A248032 A068611

Adjacent sequences: A298778 A298779 A298780 * A298782 A298783 A298784

Keyword

nonn

Author

R. H. Hardin, Jan 26 2018

Status

approved