A300637 Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 90, 253, 1036, 4418, 23097, 124439, 666648, 3654138, 20086516, 110532082, 609984097, 3368944619, 18619630952, 102941658552, 569134936442, 3146764604501, 17399003486920, 96203071912124, 531934965247052

Offset

1,1

Comments

Column 6 of A300639.

Links

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

Example

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

Crossrefs

Cf. A300639.

Sequence in context: A336783 A300433 A300767 * A301359 A352590 A037297

Adjacent sequences: A300634 A300635 A300636 * A300638 A300639 A300640

Keyword

nonn

Author

R. H. Hardin, Mar 10 2018

Status

approved