Primes that remain prime through 3 iterations of function f(x) = 8x + 1.

Terms

a(0) =2a(1) =1487a(2) =2207a(3) =2927a(4) =8807a(5) =11117a(6) =16187a(7) =17657a(8) =26357a(9) =44927a(10) =45377a(11) =48497a(12) =91757a(13) =110237a(14) =117167a(15) =122327a(16) =125387a(17) =126107a(18) =145007a(19) =170927a(20) =174527a(21) =190787a(22) =193847a(23) =203897a(24) =230567a(25) =244247a(26) =246017a(27) =270287a(28) =280547a(29) =283937