A304417 - OEIS

%I #4 May 12 2018 09:28:40

%S 1,272,2671,60245,1389257,32181958,755715475,17729422188,416850100691,

%T 9802695636421,230580600605761,5424215008615737,127605765822837170,

%U 3002004817470375696,70624643094278572766,1661510342437803768396

%N Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 6 of A304419.

%H R. H. Hardin, <a href="/A304417/b304417.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304419.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 12 2018