Tersum n + 1 (answer recorded in base 10).

Terms

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