a(0) = 1, a(n) = sum of digits of all previous terms.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =23a(7) =28a(8) =38a(9) =49a(10) =62a(11) =70a(12) =77a(13) =91a(14) =101a(15) =103a(16) =107a(17) =115a(18) =122a(19) =127a(20) =137a(21) =148a(22) =161a(23) =169a(24) =185a(25) =199a(26) =218a(27) =229a(28) =242a(29) =250