login
Duplicate of A076839.
0

%I #12 May 21 2024 13:13:00

%S 1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1

%N Duplicate of A076839.

%C Previous name was: For n>2, a(n) > 0 is such that a(n-1)^2+4*a(n-2)*a(n) is a minimal square, with a(1)=1, a(2)=1.

%C The sequence depends on seed terms a(1) and a(2); if a(1)=1, a(3)=a(2)+1. All(?) sequences end with cycle={1,2,3,2,1} (or {2,4,6,4,2}, which essentially the same cycle) of length=5.

%K dead

%O 1,3