A304845 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.

16, 64, 165, 502, 3009, 12763, 45988, 205950, 912997, 3690448, 15499328, 66956934, 281234615, 1178657330, 5007791845, 21188234139, 89234391013, 377182176376, 1595475905110, 6735810178562, 28448566412437, 120239913645632

Offset

1,1

Comments

Column 5 of A304848.

Links

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

Example

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

Crossrefs

Cf. A304848.

Sequence in context: A136264 A266103 A100184 * A190099 A316542 A306057

Adjacent sequences: A304842 A304843 A304844 * A304846 A304847 A304848

Keyword

nonn

Author

R. H. Hardin, May 19 2018

Status

approved