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Number of nX6 0..1 arrays with each 1 adjacent to 2 or 4 king-move neighboring 1s.
1

%I #4 Dec 03 2017 07:12:04

%S 1,125,799,4102,51941,472540,3650122,33758793,307234618,2650048260,

%T 23546186575,210621784186,1860743443024,16496349597816,

%U 146694214709467,1301497660823356,11548232427197861,102554004043772167

%N Number of nX6 0..1 arrays with each 1 adjacent to 2 or 4 king-move neighboring 1s.

%C Column 6 of A296039.

%H R. H. Hardin, <a href="/A296037/b296037.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A296039.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 03 2017