A317236 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

32, 184, 597, 2432, 24487, 157007, 995887, 7221707, 50355283, 342591805, 2379513980, 16554117438, 114353690440, 791567706477, 5488412860917, 38006863972394, 263176978887880, 1823153547159799, 12628183999254906

Offset

1,1

Comments

Column 6 of A317238.

Links

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

Example

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

Crossrefs

Cf. A317238.

Sequence in context: A304846 A316543 A306058 * A233387 A200840 A208925

Adjacent sequences: A317233 A317234 A317235 * A317237 A317238 A317239

Keyword

nonn

Author

R. H. Hardin, Jul 24 2018

Status

approved