Primes that remain prime through 5 iterations of function f(x) = 2x + 7.

Terms

a(0) =14723a(1) =20123a(2) =54713a(3) =109433a(4) =594653a(5) =604883a(6) =676493a(7) =759953a(8) =847103a(9) =935843a(10) =1035743a(11) =1049603a(12) =1079033a(13) =1099823a(14) =1222253a(15) =1263323a(16) =1499153a(17) =1754033a(18) =1835003a(19) =1893173a(20) =2017283a(21) =2071493a(22) =2099213a(23) =2199653a(24) =2895743a(25) =2998313a(26) =3389693a(27) =4133663