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Number of nX5 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
1

%I #4 Mar 16 2017 12:18:41

%S 0,113,5432,169426,4588054,112397437,2592339953,57256730323,

%T 1224525471560,25540531883202,522115849071140,10498992098584649,

%U 208231199360625217,4081922180343300613,79216407339487867636

%N Number of nX5 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

%C Column 5 of A283784.

%H R. H. Hardin, <a href="/A283781/b283781.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A283784.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 16 2017