A303967 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero.

13, 105, 101, 374, 1014, 2597, 6264, 16205, 40375, 105045, 275549, 708306, 1813784, 4676889, 12006087, 30873413, 79642801, 205060029, 527458705, 1358058709, 3495384673, 8994704208, 23156730671, 59612144961, 153429505829, 394939734350

Offset

1,1

Comments

Column 6 of A303969.

Links

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

Example

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

Crossrefs

Cf. A303969.

Sequence in context: A022641 A000590 A052065 * A304929 A041316 A304667

Adjacent sequences: A303964 A303965 A303966 * A303968 A303969 A303970

Keyword

nonn

Author

R. H. Hardin, May 03 2018

Status

approved