3543307domain: NAppears in sequencesa(1) = 3; for n>0, a(n+1) = a(n) + floor((a(n)-1)/2).at n=36A003312a(n) is the result of n applications of the function f on n, where f(x) = floor((3*x - 1)/2) (A001651).at n=29A353215