A305243 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.

32, 184, 158, 767, 3288, 12521, 55039, 238455, 1028982, 4474894, 19518559, 84942081, 370258428, 1613715073, 7033574315, 30657040705, 133631642692, 582478243133, 2538960848316, 11067063306710, 48240214387036

Offset

1,1

Comments

Column 6 of A305245.

Links

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

R. H. Hardin, Empirical recurrence of order 98

Formula

Empirical recurrence of order 98 (see link above)

Example

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

Crossrefs

Cf. A305245.

Sequence in context: A120046 A370649 A303798 * A304477 A316302 A165002

Adjacent sequences: A305240 A305241 A305242 * A305244 A305245 A305246

Keyword

nonn

Author

R. H. Hardin, May 28 2018

Status

approved