A298579 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

3, 23, 47, 237, 765, 3284, 14482, 53272, 215514, 912084, 3648248, 14687047, 60203513, 245335061, 994616646, 4046916244, 16494072611, 67083379987, 272827461209, 1110711231219, 4520415462039, 18391763438584, 74846658443216

Offset

1,1

Comments

Column 5 of A298582.

Links

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

Example

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

Crossrefs

Cf. A298582.

Sequence in context: A107169 A297956 A298772 * A299571 A032003 A031907

Adjacent sequences: A298576 A298577 A298578 * A298580 A298581 A298582

Keyword

nonn

Author

R. H. Hardin, Jan 22 2018

Status

approved