a(n+1) = a(n) + sum of digits in base 9 representation of a(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =24a(6) =32a(7) =40a(8) =48a(9) =56a(10) =64a(11) =72a(12) =80a(13) =96a(14) =104a(15) =112a(16) =120a(17) =128a(18) =136a(19) =144a(20) =152a(21) =168a(22) =176a(23) =184a(24) =192a(25) =200a(26) =208a(27) =216a(28) =224a(29) =240