A304261 - OEIS

%I #4 May 09 2018 10:05:27

%S 0,33,26,88,230,925,2516,8248,27317,89074,287896,945232,3089403,

%T 10093067,33056134,108135876,354125720,1159096064,3795435852,

%U 12426659094,40688258392,133217543175,436196336127,1428218527996,4676315545330

%N Number of nX6 0..1 arrays with every element unequal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A304263.

%H R. H. Hardin, <a href="/A304261/b304261.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304263.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 09 2018