Smallest prime P such that P# - Mersenne-prime(n) is prime.

Terms

a(0) =3a(1) =5a(2) =7a(3) =7a(4) =13a(5) =17a(6) =19a(7) =29a(8) =53a(9) =157a(10) =79a(11) =101a(12) =613a(13) =641a(14) =2633a(15) =2161a(16) =1697a(17) =2293a(18) =12251a(19) =4283a(20) =7573a(21) =7243a(22) =9433a(23) =22381a(24) =29411a(25) =16333