A306169 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 53, 66, 249, 832, 1956, 5421, 15993, 42682, 118773, 341634, 940420, 2616566, 7413719, 20635659, 57534784, 161865923, 452342333, 1263392559, 3543306258, 9914165346, 27719300656, 77641186448, 217307212078, 607908389285

Offset

1,1

Comments

Column 5 of A306172.

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..1..1..1..1. .0..1..1..0..1
..1..0..0..0..0. .0..0..0..0..1. .1..1..1..1..1. .1..1..1..1..1
..1..1..0..0..0. .0..0..0..0..0. .1..1..1..1..1. .1..1..1..1..1
..0..0..0..0..0. .0..0..0..1..1. .0..1..1..1..0. .1..1..0..1..1
..1..0..0..0..0. .1..0..0..0..1. .0..0..1..1..1. .0..1..0..0..1

Crossrefs

Cf. A306172.

Sequence in context: A305344 A316612 A304666 * A316424 A317426 A212754

Adjacent sequences: A306166 A306167 A306168 * A306170 A306171 A306172

Keyword

nonn

Author

R. H. Hardin, Jun 23 2018

Status

approved