a(n) = n-th prime modulo 15.

Terms

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