Conjectured least number k such that k^k - n^n is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =15a(4) =8a(5) =7a(6) =0a(7) =347a(8) =0a(9) =11a(10) =3682a(11) =17a(12) =0a(13) =23a(14) =0a(15) =17a(16) =26a(17) =313a(18) =30a(19) =47a(20) =400a(21) =53a(22) =1428a(23) =0a(24) =0a(25) =77a(26) =214a(27) =195a(28) =3820a(29) =709