a(1) = 1, for n >= 2 let the digits of a(n-1) be d_1, ..., d_i in base 10. Starting from d_1 do the following procedure: if d_r is divisible by 2, then d_r_new = d_r / 2, otherwise d_r_new = 3*d_r. a(n) = concatenation of d_r_new for r = 1 to i.

A306681

a(1) = 1, for n >= 2 let the digits of a(n-1) be d_1, ..., d_i in base 10. Starting from d_1 do the following procedure: if d_r is divisible by 2, then d_r_new = d_r / 2, otherwise d_r_new = 3*d_r. a(n) = concatenation of d_r_new for r = 1 to i.