A306164 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

32, 45, 207, 962, 4849, 25226, 128710, 660871, 3402775, 17536734, 90189989, 464083933, 2390028219, 12302770116, 63317986986, 325946070229, 1677929368349, 8637050520961, 44459022462216, 228858922197372, 1178074204583981

Offset

1,1

Comments

Column 6 of A306166.

Links

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

Example

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

Crossrefs

Cf. A306166.

Sequence in context: A305338 A316418 A304924 * A317381 A178311 A319914

Adjacent sequences: A306161 A306162 A306163 * A306165 A306166 A306167

Keyword

nonn

Author

R. H. Hardin, Jun 23 2018

Status

approved