A305915 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

8, 57, 62, 347, 2014, 8135, 57465, 489154, 3344053, 25522176, 209490803, 1611464796, 12539285595, 99907700990, 785210139974, 6162648831419, 48680431762971, 383689003675080, 3020361523395059, 23812409080409828

Offset

1,1

Comments

Column 5 of A305918.

Links

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

Example

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

Crossrefs

Cf. A305918.

Sequence in context: A244958 A043071 A304352 * A316236 A317157 A305646

Adjacent sequences: A305912 A305913 A305914 * A305916 A305917 A305918

Keyword

nonn

Author

R. H. Hardin, Jun 14 2018

Status

approved