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Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.
1

%I #4 Nov 23 2017 09:26:55

%S 37,2735,113466,5400933,253594307,11938414614,563330031268,

%T 26515589323171,1248681784524804,58814998591494213,

%U 2770085782332161201,130464623191695045459,6144598685123051237293,289398247960170761817752

%N Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 2 or 4 1s.

%C Column 7 of A295531.

%H R. H. Hardin, <a href="/A295530/b295530.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A295531.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 23 2017