Sum of digits of even numbers.

Terms

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