A303967 - OEIS

%I #4 May 03 2018 12:54:45

%S 13,105,101,374,1014,2597,6264,16205,40375,105045,275549,708306,

%T 1813784,4676889,12006087,30873413,79642801,205060029,527458705,

%U 1358058709,3495384673,8994704208,23156730671,59612144961,153429505829,394939734350

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero.

%C Column 6 of A303969.

%H R. H. Hardin, <a href="/A303967/b303967.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303969.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 03 2018