Primes that remain prime through 4 iterations of function f(x) = 5*x + 6.

Terms

a(0) =79a(1) =401a(2) =1259a(3) =2477a(4) =3019a(5) =4409a(6) =10303a(7) =15679a(8) =20509a(9) =24499a(10) =34127a(11) =43987a(12) =44389a(13) =53101a(14) =66359a(15) =71287a(16) =74857a(17) =81097a(18) =85903a(19) =90803a(20) =93053a(21) =102811a(22) =103231a(23) =104999a(24) =112601a(25) =125453a(26) =132533a(27) =144731a(28) =156347a(29) =157793