Numbers k such that k | 10^k + 1.

Terms

a(0) =1a(1) =11a(2) =121a(3) =253a(4) =1331a(5) =2783a(6) =5819a(7) =11891a(8) =14641a(9) =30613a(10) =35167a(11) =45023a(12) =64009a(13) =96569a(14) =130801a(15) =133837a(16) =161051a(17) =273493a(18) =336743a(19) =386837a(20) =495253a(21) =527197a(22) =558877a(23) =640343a(24) =704099a(25) =808841a(26) =1035529a(27) =1062259a(28) =1438811a(29) =1472207