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Number of 6Xn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors.
1

%I #4 Mar 14 2017 16:21:07

%S 64,2816,49924,1489917,42865601,1119189256,30968693109,851752858746,

%T 23200520913631,635915486887512,17414698256902544,476456224450550450,

%U 13044303755666285002,357081400450123268030,9774047357323889529074

%N Number of 6Xn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors.

%C Row 6 of A283691.

%H R. H. Hardin, <a href="/A283696/b283696.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

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

%Y Cf. A283691.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 14 2017