Numbers k such that k | 13^k + 1.

Terms

a(0) =1a(1) =2a(2) =7a(3) =10a(4) =34a(5) =49a(6) =50a(7) =170a(8) =203a(9) =250a(10) =343a(11) =578a(12) =850a(13) =1250a(14) =1421a(15) =2401a(16) =2890a(17) =4210a(18) =4250a(19) =5887a(20) =6010a(21) =6250a(22) =6410a(23) =9826a(24) =9947a(25) =11977a(26) =14450a(27) =16807a(28) =21050a(29) =21250