Primes connected to two primes by the (p+1)/2 and 2p-1 operators.

Terms

a(0) =3a(1) =37a(2) =157a(3) =661a(4) =877a(5) =997a(6) =1237a(7) =1657a(8) =2137a(9) =2557a(10) =3061a(11) =4177a(12) =4261a(13) =4357a(14) =4621a(15) =5581a(16) =6037a(17) =6121a(18) =6217a(19) =6361a(20) =7537a(21) =8317a(22) =8461a(23) =8521a(24) =9241a(25) =9277a(26) =9721a(27) =9901a(28) =10837a(29) =11497