A300433 Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 90, 228, 697, 2104, 6677, 21891, 68080, 218474, 707211, 2281943, 7421447, 24244635, 79613441, 262305791, 866922952, 2874086666, 9549579356, 31785844580, 105953201430, 353610758665, 1181302294738, 3949384672542, 13211982105828

Offset

1,1

Comments

Column 6 of A300435.

Links

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

Example

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

Crossrefs

Cf. A300435.

Sequence in context: A065197 A300348 A336783 * A300767 A300637 A301359

Adjacent sequences: A300430 A300431 A300432 * A300434 A300435 A300436

Keyword

nonn

Author

R. H. Hardin, Mar 05 2018

Status

approved