A316931 Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 908, 31197, 2937685, 259460352, 23331389753, 2110655397816, 191524282642552, 17393755319723555, 1580375973369029121, 143617078446619021662, 13052162189846836917011, 1186238624883310903156664

Offset

1,2

Comments

Column 7 of A316932.

Links

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

Example

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

Crossrefs

Cf. A316932.

Sequence in context: A317214 A305684 A317064 * A317702 A214001 A252136

Adjacent sequences: A316928 A316929 A316930 * A316932 A316933 A316934

Keyword

nonn

Author

R. H. Hardin, Jul 16 2018

Status

approved