Primes of the form 8*k-1 such that 4*k-1, 16*k-1, 32*k-1 and 64*k-1 are also primes.

Terms

a(0) =359a(1) =107279a(2) =126839a(3) =253679a(4) =254279a(5) =508559a(6) =592199a(7) =681839a(8) =1214639a(9) =1621079a(10) =2138399a(11) =2245319a(12) =3197399a(13) =3243239a(14) =3641999a(15) =3732479a(16) =3825359a(17) =3841919a(18) =4090679a(19) =4276799a(20) =4315799a(21) =4490639a(22) =4556159a(23) =4714439a(24) =5335559a(25) =5731679