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%I #6 Dec 18 2015 18:18:00
%S 2,16,98,643,4047,22714,139341,794118,4654884,27655332,162017453,
%T 985389943,5963777274,36963453329,232521285314,1479703961900,
%U 9627524117464
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically
%C Diagonal of A207111
%e Some solutions for n=4
%e ..1..1..1..1....0..0..1..0....1..0..0..1....1..1..0..1....1..1..1..0
%e ..1..1..0..0....1..0..1..0....0..1..0..0....0..0..1..0....0..1..0..0
%e ..1..1..1..1....0..0..1..0....1..1..0..1....0..1..0..1....0..1..0..0
%e ..1..1..0..0....0..0..1..0....0..1..0..0....0..0..1..0....0..1..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 15 2012