A317701 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 272, 5114, 242908, 11013057, 508895558, 23660712291, 1103426578662, 51504728212214, 2405230028991235, 112343236438058707, 5247698593127586871, 245134541408802560300, 11451062337945565153912, 534920604669153194413527

Offset

1,2

Comments

Column 6 of A317703.

Links

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

Example

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

Crossrefs

Cf. A317703.

Sequence in context: A305683 A317063 A316930 * A141546 A000517 A350975

Adjacent sequences: A317698 A317699 A317700 * A317702 A317703 A317704

Keyword

nonn

Author

R. H. Hardin, Aug 04 2018

Status

approved