The floor(exp(n))-th irregular prime.

Terms

a(0) =37a(1) =59a(2) =149a(3) =389a(4) =809a(5) =2543a(6) =8089a(7) =25301a(8) =76493a(9) =232439a(10) =695407a(11) =2040551a(12) =5993249a(13) =17532407a(14) =50970511a(15) =147468721a(16) =424835869a(17) =1219642051