%I

%S 0,0,1,0,0,1,0,0,1,1,0,1,1,0,0,1,0,0,1,0,0,1,1,0,1,1,0,0,1,0,0,1,0,0,

%T 1,1,0,1,1,0,0,1,0,0,1,0,0,1,1,0,1,1,0,0,1,0,0,1,0,0,1,1,0,1,1,0,0,1,

%U 0,0,1,0,0,1,1,0,1,1,0,0,1,0,0,1,1,0,1,1,0,1,1,0,0,1,0,0,1,1,0,1,1,0,1,1,0

%N Let c(1) = c(2) = 1, c(n+2) = 1/(c(n+1)+c(n)); then a(n) = (1+sign(c(n)-sqrt(1/2))/2.

%K easy,nonn

%O 1,1

%A _Benoit Cloitre_, Oct 04 2002