A301449 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

64, 5536, 206266, 8414314, 346263718, 14319674594, 592006690060, 24472344492129, 1011614229196954, 41818633717956475, 1728717456235095132, 71462530065996111095, 2954149871798731848542, 122119977375690877476823

Offset: 1

Author

R. H. Hardin, Mar 21 2018

Keywords

• nonn

Comments

Column 7 of A301450.

Examples

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

Links

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

Crossrefs

Cf. A301450.