A086567 Length of cycle produced by the function f: (x; y; z) ->(x-y-z; y; 2*y + z) if y + = z <x and (x; y; z) ->(y + z -x; x; 2*x -z) if y +z >x when started at (n,1,1).

1, 0, 3, 5, 4, 0, 5, 10, 7, 11, 6, 0, 7, 16, 11, 9, 10, 21, 8, 0, 9, 21, 12, 27, 11, 14, 17, 23, 10, 0, 11, 32, 18, 27, 18, 13, 15, 28, 19, 32, 12, 0, 13, 38, 25, 19, 18, 47, 15, 44, 16, 38, 18, 50, 14, 0, 15, 39, 20, 59, 18, 54, 28, 17, 24, 31, 21, 28, 29, 49, 16, 0, 17