A304949 Number of n X 5 0..1 arrays with every element unequal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 26, 29, 70, 189, 468, 1436, 3753, 11101, 32272, 92418, 274230, 805253, 2345558, 6905335, 20303773, 59562936, 175124330, 514790654, 1512660477, 4447015284, 13073925763, 38431032103, 112984194483, 332171099635, 976548107078

Offset

1,2

Comments

Column 5 of A304952.

Links

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

Example

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

Crossrefs

Cf. A304952.

Sequence in context: A055109 A106552 A106550 * A316617 A303815 A069962

Adjacent sequences: A304946 A304947 A304948 * A304950 A304951 A304952

Keyword

nonn

Author

R. H. Hardin, May 22 2018

Status

approved