Tersum n + 11.

Terms

a(0) =11a(1) =9a(2) =10a(3) =14a(4) =12a(5) =13a(6) =17a(7) =15a(8) =16a(9) =20a(10) =18a(11) =19a(12) =23a(13) =21a(14) =22a(15) =26a(16) =24a(17) =25a(18) =2a(19) =0a(20) =1a(21) =5a(22) =3a(23) =4a(24) =8a(25) =6a(26) =7a(27) =38a(28) =36a(29) =37