A306051 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

32, 293, 1261, 6604, 66149, 554682, 3914486, 34263459, 301965791, 2464748721, 20868384434, 180078276384, 1523011212543, 12909110771761, 110238004393252, 937966302675906, 7971252754218173, 67878006986167166, 577819881746426530

Offset

1,1

Comments

Column 6 of A306053.

Links

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

Example

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

Crossrefs

Cf. A306053.

Sequence in context: A316516 A304470 A316287 * A317228 A250563 A060158

Adjacent sequences: A306048 A306049 A306050 * A306052 A306053 A306054

Keyword

nonn

Author

R. H. Hardin, Jun 18 2018

Status

approved