A300470 Number of nX6 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

32, 1490, 31106, 759100, 18735889, 462538206, 11408562672, 281433652906, 6942908646999, 171280218101813, 4225436849045491, 104240370076371736, 2571581648449512936, 63440223592452588279, 1565053148367633815372

Offset: 1

Author

R. H. Hardin, Mar 06 2018

Keywords

• nonn

Comments

Column 6 of A300472.

Examples

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

Links

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

Crossrefs

Cf. A300472.