Least positive k such that n^n + k is a Chen prime.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =12a(5) =23a(6) =4a(7) =73a(8) =100a(9) =19a(10) =450a(11) =281a(12) =114a(13) =241a(14) =56a(15) =51a(16) =582a(17) =527a(18) =412a(19) =771a(20) =230a(21) =997a(22) =440a(23) =95a(24) =1882a(25) =1117a(26) =224a(27) =1213a(28) =1968a(29) =29