A326164 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

21, 91, 396, 2644, 27902, 307759, 3984553, 50108120, 631752599, 7873793259, 97914938383, 1217849040638, 15154502797138, 188732168188613, 2350844998230808, 29285586927132940, 364802626463161313

Offset

1,1

Comments

Column 7 of A326165.

Links

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

Example

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

Crossrefs

Cf. A326165.

Sequence in context: A194532 A065827 A318036 * A143843 A119109 A254603

Adjacent sequences: A326161 A326162 A326163 * A326165 A326166 A326167

Keyword

nonn

Author

R. H. Hardin, Jun 09 2019

Status

approved