Primes which can be written as (b^k+1)/(b+1) for positive integers b and k.

Terms

a(0) =3a(1) =7a(2) =11a(3) =13a(4) =31a(5) =43a(6) =61a(7) =73a(8) =157a(9) =211a(10) =241a(11) =307a(12) =421a(13) =463a(14) =521a(15) =547a(16) =601a(17) =683a(18) =757a(19) =1123a(20) =1483a(21) =1723a(22) =2551a(23) =2731a(24) =2971a(25) =3307a(26) =3541a(27) =3907a(28) =4423a(29) =4831