Primes in A258774.

Terms

a(0) =3a(1) =13a(2) =43a(3) =157a(4) =73a(5) =241a(6) =157a(7) =211a(8) =601a(9) =601a(10) =421a(11) =601a(12) =2971a(13) =1483a(14) =8191a(15) =6163a(16) =3307a(17) =2971a(18) =6481a(19) =8191a(20) =28393a(21) =3907a(22) =28393a(23) =6481a(24) =8191a(25) =28393a(26) =37057a(27) =26407a(28) =12211a(29) =28393