Sum of all the digits of n in every prime base from 2 to n-1.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =9a(5) =11a(6) =11a(7) =10a(8) =14a(9) =16a(10) =21a(11) =21a(12) =21a(13) =23a(14) =29a(15) =32a(16) =39a(17) =42a(18) =42a(19) =39a(20) =47a(21) =52a(22) =53a(23) =49a(24) =52a(25) =53a(26) =62a(27) =66a(28) =76a(29) =83