a(n) = least k such that the remainder of 13^k divided by k is n.

Terms

a(0) =2a(1) =11a(2) =5a(3) =51a(4) =44a(5) =7a(6) =15a(7) =371285a(8) =10a(9) =74853a(10) =158a(11) =13757837a(12) =17a(13) =5805311a(14) =22a(15) =2181a(16) =38a(17) =25a(18) =30a(19) =9667a(20) =74a(21) =87a(22) =146a(23) =23441a(24) =88a(25) =19629779a(26) =35a(27) =45a(28) =70a(29) =235433