A318080 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

13, 18, 32, 64, 126, 314, 699, 1778, 4262, 10254, 25322, 63395, 158636, 392649, 973186, 2419617, 6047372, 15095553, 37607858, 93596239, 233272071, 581969505, 1451785788, 3618976256, 9020094130, 22487625577, 56080370254, 139848730677

Offset

1,1

Comments

Column 6 of A318082.

Links

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

Example

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

Crossrefs

Cf. A318082.

Sequence in context: A131019 A317771 A037158 * A066469 A318348 A197704

Adjacent sequences: A318077 A318078 A318079 * A318081 A318082 A318083

Keyword

nonn

Author

R. H. Hardin, Aug 15 2018

Status

approved