Tersum n + 19.

Terms

a(0) =19a(1) =20a(2) =18a(3) =22a(4) =23a(5) =21a(6) =25a(7) =26a(8) =24a(9) =1a(10) =2a(11) =0a(12) =4a(13) =5a(14) =3a(15) =7a(16) =8a(17) =6a(18) =10a(19) =11a(20) =9a(21) =13a(22) =14a(23) =12a(24) =16a(25) =17a(26) =15a(27) =46a(28) =47a(29) =45