%I #4 Aug 06 2018 11:50:49
%S 32,89,100,127,177,266,425,709,1217,2126,3753,6666,11882,21223,37952,
%T 67914,121578,217696,389856,698220,1250549,2239862,4011891,7185904,
%U 12871122,23054360,41294363,73965487,132485357,237305006,425055936
%N Number of nX6 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 6 of A317764.
%H R. H. Hardin, <a href="/A317762/b317762.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4) +a(n-7) for n>10
%e Some solutions for n=5
%e ..0..0..0..0..0..0. .0..1..1..0..0..0. .0..0..1..1..0..0. .0..0..0..0..0..0
%e ..1..1..1..1..1..1. .0..1..1..0..0..0. .0..1..1..0..0..1. .0..0..0..0..0..1
%e ..1..1..1..1..1..1. .0..1..1..0..0..0. .1..1..0..0..1..1. .0..0..0..0..1..1
%e ..1..1..1..1..1..0. .0..1..1..0..0..0. .1..0..0..1..1..0. .0..0..0..1..1..0
%e ..1..1..1..1..0..0. .0..1..1..0..0..1. .0..0..1..1..0..0. .0..0..1..1..0..0
%Y Cf. A317764.
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 06 2018
|