A305768 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

64, 5912, 76613, 1696681, 33584061, 686168124, 14187207394, 291309897184, 6009246932279, 123790207848539, 2550812879145083, 52567071084185534, 1083186544004971825, 22321284249041523443, 459966262586941188849

Offset

1,1

Comments

Column 7 of A305769.

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..1. .0..0..0..0..1..0..0. .0..0..0..1..1..0..1
..0..0..0..0..0..0..0. .0..0..0..1..0..1..1. .0..0..0..0..0..0..1
..0..0..0..0..0..0..0. .0..0..0..0..0..1..1. .0..0..0..0..0..1..0
..0..0..0..0..0..0..0. .0..0..0..1..0..0..1. .0..0..1..0..0..0..0
..0..1..1..1..1..0..0. .0..0..0..1..0..1..0. .0..0..0..1..0..0..0

Crossrefs

Cf. A305769.

Sequence in context: A321207 A281954 A316182 * A317117 A305529 A317003

Adjacent sequences: A305765 A305766 A305767 * A305769 A305770 A305771

Keyword

nonn

Author

R. H. Hardin, Jun 10 2018

Status

approved