a(n) = n-th prime modulo 16.

Terms

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