Carmichael numbers: composite numbers k such that a^(k-1) == 1 (mod k) for every a coprime to k.

Terms

a(0) =561a(1) =1105a(2) =1729a(3) =2465a(4) =2821a(5) =6601a(6) =8911a(7) =10585a(8) =15841a(9) =29341a(10) =41041a(11) =46657a(12) =52633a(13) =62745a(14) =63973a(15) =75361a(16) =101101a(17) =115921a(18) =126217a(19) =162401a(20) =172081a(21) =188461a(22) =252601a(23) =278545a(24) =294409a(25) =314821a(26) =334153a(27) =340561a(28) =399001a(29) =410041