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Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
1

%I #4 Nov 12 2017 20:03:33

%S 12,280,3853,59126,898493,13706771,209181266,3184995895,48548926944,

%T 740019106008,11277857830329,171883749077632,2619682437092951,

%U 39926222792932513,608509663116604097,9274219880373144746

%N Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.

%C Column 5 of A295040.

%H R. H. Hardin, <a href="/A295037/b295037.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A295037/a295037.txt">Empirical recurrence of order 91</a>

%F Empirical recurrence of order 91 (see link above)

%e Some solutions for n=4

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

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

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

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

%Y Cf. A295040.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 12 2017