A317156 Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 21, 29, 105, 379, 1245, 5458, 25315, 111407, 527886, 2563160, 12170793, 58396626, 282895106, 1362930990, 6568303800, 31746692725, 153297619453, 739913361896, 3573891092629, 17261311752935, 83352383451568, 402555795489298

Offset

1,1

Comments

Column 4 of A317160.

Links

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

R. H. Hardin, Empirical recurrence of order 66

Formula

Empirical recurrence of order 66 (see link above)

Example

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

Crossrefs

Cf. A317160.

Sequence in context: A305343 A186304 A316235 * A304665 A306168 A305645

Adjacent sequences: A317153 A317154 A317155 * A317157 A317158 A317159

Keyword

nonn

Author

R. H. Hardin, Jul 22 2018

Status

approved