Smallest prime > n having primitive root n, or 0 if no such prime exists.

Terms

a(0) =2a(1) =3a(2) =5a(3) =0a(4) =7a(5) =11a(6) =11a(7) =11a(8) =0a(9) =17a(10) =13a(11) =17a(12) =19a(13) =17a(14) =19a(15) =0a(16) =23a(17) =29a(18) =23a(19) =23a(20) =23a(21) =31a(22) =47a(23) =31a(24) =0a(25) =29a(26) =29a(27) =41a(28) =41a(29) =41