Smallest number of the form n^k +1 with the prime signature of n, or 0 if no such number exists.

Terms

a(0) =0a(1) =2a(2) =2a(3) =0a(4) =2a(5) =217a(6) =2a(7) =0a(8) =0a(9) =10001a(10) =2a(11) =0a(12) =2a(13) =15a(14) =226a(15) =0a(16) =2a(17) =325a(18) =2a(19) =0a(20) =22a(21) =485a(22) =2a(23) =0a(24) =0a(25) =456977a(26) =0a(27) =0a(28) =2a(29) =27001