A320400 - OEIS

%I #4 Oct 12 2018 12:29:01

%S 32,1178,18754,368049,6845143,127789964,2392115850,44629532699,

%T 834140753692,15580741264463,291092212043702,5438147049045711,

%U 101595093735936213,1898003488715538165,35458425306773811200

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A320402.

%H R. H. Hardin, <a href="/A320400/b320400.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A320402.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 12 2018