%I #6 Dec 18 2015 18:18:01
%S 2,16,72,436,2310,11994,65564,379618,2306234,15546084,105736196,
%T 882008157,7460256028,79554888778,842718226878,10871887456045,
%U 151150820925264,2491064356652975,43353562677488606,900988265135221518
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically
%C Diagonal of A207682
%e Some solutions for n=4
%e ..0..1..1..0....1..1..0..0....0..1..1..0....0..1..0..0....1..0..0..1
%e ..0..1..0..0....0..0..1..0....1..0..0..1....0..0..1..0....1..1..1..0
%e ..0..0..1..0....0..1..1..0....1..1..1..1....0..1..0..0....0..1..1..1
%e ..0..1..1..0....0..1..0..0....0..0..1..0....0..0..1..0....1..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 19 2012
|