A301497 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

21, 11, 479, 7454, 164346, 3243936, 62812639, 1238986634, 24457707005, 482452924004, 9513853529766, 187654670406304, 3701674082495411, 73020138987377115, 1440418791247373580, 28414387585128502031

Offset

1,1

Comments

Column 7 of A301498.

Links

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

Example

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

Crossrefs

Cf. A301498.

Sequence in context: A300943 A270790 A300887 * A258083 A260527 A260529

Adjacent sequences: A301494 A301495 A301496 * A301498 A301499 A301500

Keyword

nonn

Author

R. H. Hardin, Mar 22 2018

Status

approved