A304469 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

16, 120, 316, 1100, 5063, 18879, 68338, 289227, 1157258, 4393415, 17723784, 71637043, 280423241, 1116468033, 4495393108, 17861030500, 71097750334, 285225505263, 1140055524713, 4550513334300, 18230524808865, 73024146835806

Offset

1,1

Comments

Column 5 of A304472.

Links

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

R. H. Hardin, Empirical recurrence of order 84

Formula

Empirical recurrence of order 84 (see link above)

Example

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

Crossrefs

Cf. A304472.

Sequence in context: A305227 A304772 A316515 * A316286 A306050 A248621

Adjacent sequences: A304466 A304467 A304468 * A304470 A304471 A304472

Keyword

nonn

Author

R. H. Hardin, May 13 2018

Status

approved