Primes p such that the decimal expansion of 1/p has a periodic part of even length.

Terms

a(0) =7a(1) =11a(2) =13a(3) =17a(4) =19a(5) =23a(6) =29a(7) =47a(8) =59a(9) =61a(10) =73a(11) =89a(12) =97a(13) =101a(14) =103a(15) =109a(16) =113a(17) =127a(18) =131a(19) =137a(20) =139a(21) =149a(22) =157a(23) =167a(24) =179a(25) =181a(26) =193a(27) =197a(28) =211a(29) =223