A305045 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 49, 17, 17, 201, 137, 42, 5165, 6357, 5846, 188507, 395242, 807954, 8663043, 25748810, 74038793, 473267062, 1684410691, 5713158552, 28622444576, 110454531459, 407922983655, 1823045922549, 7269915840634, 28075575562716

Offset

1,2

Comments

Column 6 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..1..0..0..1..0. .0..1..0..1..1..0. .0..1..1..0..0..1
..1..1..0..1..0..1. .1..0..1..1..0..1. .1..1..0..0..1..0. .0..1..0..0..1..0
..1..0..1..1..1..1. .1..1..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0
..1..0..1..1..0..1. .1..0..1..1..0..1. .0..1..0..0..1..0. .1..1..0..0..1..1
..0..1..1..0..0..1. .0..1..0..0..1..0. .1..0..1..1..0..1. .0..1..0..0..1..0

Crossrefs

Cf. A305047.

Sequence in context: A218167 A145583 A304139 * A065787 A033369 A236247

Adjacent sequences: A305042 A305043 A305044 * A305046 A305047 A305048

Keyword

nonn

Author

R. H. Hardin, May 24 2018

Status

approved