Smallest k > 0 such that k^prime(n) - prime(n) is prime.

Terms

a(0) =2a(1) =2a(2) =4a(3) =60a(4) =28a(5) =2a(6) =234a(7) =2a(8) =10a(9) =186a(10) =32a(11) =8a(12) =22a(13) =6a(14) =76a(15) =330a(16) =78a(17) =62a(18) =462a(19) =88a(20) =1416a(21) =1440a(22) =150a(23) =40a(24) =308a(25) =144a(26) =260a(27) =42a(28) =492a(29) =2320