Nimsum n + 8.

Terms

a(0) =8a(1) =9a(2) =10a(3) =11a(4) =12a(5) =13a(6) =14a(7) =15a(8) =0a(9) =1a(10) =2a(11) =3a(12) =4a(13) =5a(14) =6a(15) =7a(16) =24a(17) =25a(18) =26a(19) =27a(20) =28a(21) =29a(22) =30a(23) =31a(24) =16a(25) =17a(26) =18a(27) =19a(28) =20a(29) =21