A298885 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

3, 23, 23, 73, 123, 243, 444, 897, 1801, 3462, 6669, 13291, 25762, 49483, 97860, 193033, 376031, 735990, 1440269, 2815283, 5522803, 10827092, 21196028, 41505035, 81298779, 159266998, 311969014, 611140770, 1197086348, 2345047342, 4593936013

Offset: 1

Author

R. H. Hardin, Jan 28 2018

Keywords

• nonn

Comments

Column 5 of A298888.

Examples

			Some solutions for n=7
..0..1..0..0..1. .0..0..0..1..0. .0..0..0..1..0. .0..1..1..0..1
..0..1..1..1..0. .1..1..1..0..0. .1..1..1..1..0. .1..0..0..0..1
..0..1..1..1..0. .0..0..0..0..0. .0..1..1..1..0. .1..0..0..0..1
..1..1..1..1..1. .1..0..0..0..1. .0..1..1..1..1. .0..0..0..0..0
..0..0..0..1..1. .1..0..0..0..1. .1..0..0..1..1. .1..1..1..0..0
..1..1..1..1..0. .1..0..1..1..0. .0..0..1..1..0. .0..0..0..0..1
..0..0..0..1..0. .0..0..1..0..1. .1..1..0..1..0. .1..1..1..0..1
		

Links

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

Crossrefs

Cf. A298888.