Iterated sum of digits of n is a power of 2.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =10a(5) =11a(6) =13a(7) =17a(8) =19a(9) =20a(10) =22a(11) =26a(12) =28a(13) =29a(14) =31a(15) =35a(16) =37a(17) =38a(18) =40a(19) =44a(20) =46a(21) =47a(22) =49a(23) =53a(24) =55a(25) =56a(26) =58a(27) =62a(28) =64a(29) =65