Tersum n + 12.

Terms

a(0) =12a(1) =13a(2) =14a(3) =15a(4) =16a(5) =17a(6) =9a(7) =10a(8) =11a(9) =21a(10) =22a(11) =23a(12) =24a(13) =25a(14) =26a(15) =18a(16) =19a(17) =20a(18) =3a(19) =4a(20) =5a(21) =6a(22) =7a(23) =8a(24) =0a(25) =1a(26) =2a(27) =39a(28) =40a(29) =41