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

%I #4 Dec 11 2017 11:30:35

%S 37,2728,81661,3372222,138882856,5498685275,221204933878,

%T 8887761158698,356576134627608,14315319558357738,574677595957999964,

%U 23068808260692029253,926051656630306277098,37174473698314395980970

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

%C Column 7 of A296386.

%H R. H. Hardin, <a href="/A296385/b296385.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A296386.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2017