Primes and their indices such that when their respective SOD's are both prime, the SOD of the index is the nextprime of the prime SOD.

A117458

Primes and their indices such that when their respective SOD's are both prime, the SOD of the index is the nextprime of the prime SOD.

Terms

    a(0) =227a(1) =313a(2) =1723a(3) =2003a(4) =2311a(5) =2609a(6) =3329a(7) =3701a(8) =4007a(9) =4027a(10) =4801a(11) =4931a(12) =5107a(13) =7253a(14) =10457a(15) =12143a(16) =12163a(17) =12211a(18) =12433a(19) =12547a(20) =13063a(21) =14143a(22) =14341a(23) =14831a(24) =15139a(25) =15373a(26) =16091a(27) =17027a(28) =17047a(29) =19403

External references