Mathematical sequence, finding the law 1,3,2,6,5,15,14,x,y,z,122…… The values of X, y and Z are? What are the rules in this series?

Mathematical sequence, finding the law 1,3,2,6,5,15,14,x,y,z,122…… The values of X, y and Z are? What are the rules in this series?

The law of x = 42, y = 41, z = 123: the even term is three times of the previous odd term, and then a number smaller than one, then three times of the number, and then a number smaller than one We use a (n) to denote the nth number, that is: a (1) = 1n is odd, a (n) = a (n-1) - 1, and a (n) = 3 * a (n-1) is even, so a (1) = 1a (2) = 3 * a (1) =