a(1) = 1; thereafter a(n+1) = a(n) + product of nonzero digits of a(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =22a(6) =26a(7) =38a(8) =62a(9) =74a(10) =102a(11) =104a(12) =108a(13) =116a(14) =122a(15) =126a(16) =138a(17) =162a(18) =174a(19) =202a(20) =206a(21) =218a(22) =234a(23) =258a(24) =338a(25) =410a(26) =414a(27) =430a(28) =442a(29) =474