Sum of digits of 2^n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =7a(5) =5a(6) =10a(7) =11a(8) =13a(9) =8a(10) =7a(11) =14a(12) =19a(13) =20a(14) =22a(15) =26a(16) =25a(17) =14a(18) =19a(19) =29a(20) =31a(21) =26a(22) =25a(23) =41a(24) =37a(25) =29a(26) =40a(27) =35a(28) =43a(29) =41