Least prime such that whenever 2*a(n) = p+q with p and q prime, one has p,q > prime(n).

Terms

a(0) =3a(1) =19a(2) =19a(3) =61a(4) =61a(5) =151a(6) =151a(7) =173a(8) =173a(9) =601a(10) =677a(11) =677a(12) =677a(13) =677a(14) =691a(15) =691a(16) =691a(17) =1321a(18) =1321a(19) =1321a(20) =1321a(21) =1321a(22) =1321a(23) =1321a(24) =1321a(25) =1321a(26) =4801a(27) =4801a(28) =4801a(29) =4801