A112085 - OEIS

%I #2 Mar 31 2012 14:02:21

%S 1,2,2,1,4,1,2,2,1,2,2,1,4,1,2,2,1,2,2,1,2,2,1,4,1,2,2,1,2,2,1,4,1,2,

%T 2,1,2,2,1,2,2,1,4,1,2,2,1,2,2,1,4,1,2,2,1,4,1,2,2,1,4,1,2,2,1,2,2,1,

%U 4,1,2,2,1,4,1,2,2,1,4,1,2,2,1,2,2,1,4,1,2,2,1,2,2,1,2,2,1,4,1,2,2,1

%N First differences of A112055.

%C Will other terms than 1, 2 or 4 ever appear? Is there genuine periodicity?

%F a(n) = A112055(n+1)-A112055(n).

%K nonn

%O 1,2

%A _Antti Karttunen_, Aug 28 2005