Primes p such that p-1 is squarefree.

Terms

a(0) =2a(1) =3a(2) =7a(3) =11a(4) =23a(5) =31a(6) =43a(7) =47a(8) =59a(9) =67a(10) =71a(11) =79a(12) =83a(13) =103a(14) =107a(15) =131a(16) =139a(17) =167a(18) =179a(19) =191a(20) =211a(21) =223a(22) =227a(23) =239a(24) =263a(25) =283a(26) =311a(27) =331a(28) =347a(29) =359