A305454 Number of nX5 0..1 arrays with every element unequal to 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

0, 61, 376, 5580, 79810, 1117343, 16062787, 228184784, 3255027240, 46401757420, 661366698927, 9428675340241, 134402077281152, 1915938773275685, 27311918408468448, 389334703089935684, 5550020585352043890

Offset

1,2

Comments

Column 5 of A305457.

Links

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

Example

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

Crossrefs

Cf. A305457.

Sequence in context: A353225 A189174 A304062 * A266134 A305019 A316683

Adjacent sequences: A305451 A305452 A305453 * A305455 A305456 A305457

Keyword

nonn

Author

R. H. Hardin, Jun 01 2018

Status

approved