Carmichael numbers with exactly 4 prime factors.

Terms

a(0) =41041a(1) =62745a(2) =63973a(3) =75361a(4) =101101a(5) =126217a(6) =172081a(7) =188461a(8) =278545a(9) =340561a(10) =449065a(11) =552721a(12) =656601a(13) =658801a(14) =670033a(15) =748657a(16) =838201a(17) =852841a(18) =997633a(19) =1033669a(20) =1082809a(21) =1569457a(22) =1773289a(23) =2100901a(24) =2113921a(25) =2433601a(26) =2455921