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Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.
1

%I #4 Dec 16 2017 07:07:00

%S 21,480,6241,125765,2607478,52756072,1109882746,23359296497,

%T 492457987101,10402250973413,219775565244891,4644590743236824,

%U 98165206674288770,2074840058451866478,43855171635171730011,926958389641748039690

%N Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 3 neighboring 1s.

%C Column 6 of A296588.

%H R. H. Hardin, <a href="/A296586/b296586.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A296588.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 16 2017