Carmichael numbers divisible by 3.

Terms

a(0) =561a(1) =62745a(2) =656601a(3) =11921001a(4) =26719701a(5) =45318561a(6) =174352641a(7) =230996949a(8) =662086041a(9) =684106401a(10) =689880801a(11) =1534274841a(12) =1848112761a(13) =2176838049a(14) =3022354401a(15) =5860426881a(16) =6025532241a(17) =6097778961a(18) =7281824001a(19) =7397902401a(20) =10031651841a(21) =10054063041a(22) =10585115841