a(n+1) is the sum of digits of (a(n) + a(n-1)).

Terms

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