A316127 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

3, 120, 816, 6562, 58172, 493599, 4133986, 35123927, 298723540, 2533874021, 21490592814, 182464139881, 1548748329307, 13142740852722, 111548230519914, 946767224423831, 8035320588821634, 68197538860309996, 578812574943012490

Offset

1,1

Comments

Column 5 of A316130.

Links

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

Example

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

Crossrefs

Cf. A316130.

Sequence in context: A227480 A304694 A316445 * A317433 A214312 A343831

Adjacent sequences: A316124 A316125 A316126 * A316128 A316129 A316130

Keyword

nonn

Author

R. H. Hardin, Jun 24 2018

Status

approved