A301449 - OEIS

%I #4 Mar 21 2018 11:55:53

%S 64,5536,206266,8414314,346263718,14319674594,592006690060,

%T 24472344492129,1011614229196954,41818633717956475,

%U 1728717456235095132,71462530065996111095,2954149871798731848542,122119977375690877476823

%N 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.

%C Column 7 of A301450.

%H R. H. Hardin, <a href="/A301449/b301449.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..0..1..1..0. .0..0..0..0..1..0..0. .0..0..0..0..0..0..1

%e ..0..1..0..1..0..1..0. .0..1..0..1..1..1..1. .0..1..0..1..1..0..1

%e ..0..0..1..0..1..0..0. .0..0..1..0..0..1..0. .0..0..1..0..1..1..1

%e ..0..1..0..0..1..1..1. .0..1..0..1..1..0..1. .0..1..0..0..0..0..1

%e ..0..0..1..0..0..1..0. .0..0..1..1..0..0..0. .0..0..1..1..1..0..1

%Y Cf. A301450.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 21 2018