A305046 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 99, 40, 25, 337, 42, 116, 6542, 3137, 4862, 144931, 173351, 322085, 3811451, 7402648, 16742048, 113783711, 289925364, 754094153, 3729932732, 10995324242, 31408763906, 129954407027, 412346112035, 1252076565322, 4694829609193

Offset

1,2

Comments

Column 7 of A305047.

Links

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

Example

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

Crossrefs

Cf. A305047.

Sequence in context: A309232 A360376 A304140 * A316732 A033419 A110397

Adjacent sequences: A305043 A305044 A305045 * A305047 A305048 A305049

Keyword

nonn

Author

R. H. Hardin, May 24 2018

Status

approved