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

Terms

a(0) =2a(1) =3a(2) =7a(3) =0a(4) =23a(5) =41a(6) =71a(7) =0a(8) =0a(9) =313a(10) =643a(11) =4111a(12) =457a(13) =1031a(14) =439a(15) =0a(16) =311a(17) =53173a(18) =191a(19) =107227a(20) =409a(21) =3361a(22) =2161a(23) =533821a(24) =0a(25) =12391a(26) =0a(27) =133321a(28) =15791a(29) =124153