A317042 Number of n X 7 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

21, 289, 527, 14294, 333207, 7760044, 302924053, 11244564485, 374107033198, 13676571568127, 507556461460973, 18202712275182220, 661696234025152587, 24271816590074405501, 883498080212983561554, 32182611394905747315615

Offset

1,1

Comments

Column 7 of A317043.

Links

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

Example

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

Crossrefs

Cf. A317043.

Sequence in context: A317159 A305648 A316924 * A317696 A025967 A022452

Adjacent sequences: A317039 A317040 A317041 * A317043 A317044 A317045

Keyword

nonn

Author

R. H. Hardin, Jul 19 2018

Status

approved