Least b > 1 such that (b^(prime(n)^2) - 1)/(b^prime(n) - 1) is prime.

Terms

a(0) =2a(1) =2a(2) =22a(3) =2a(4) =43a(5) =24a(6) =315a(7) =38a(8) =54a(9) =265a(10) =605a(11) =61a(12) =697a(13) =306a(14) =1153a(15) =370a(16) =2a(17) =10688a(18) =3075a(19) =2338a(20) =1153a(21) =3243a(22) =130a(23) =2301a(24) =315a(25) =200a(26) =1155a(27) =14739a(28) =4591a(29) =2230