Carmichael numbers k for which A053575(k) [the odd part of phi] divides k-1.

Terms

a(0) =561a(1) =1105a(2) =2465a(3) =6601a(4) =8911a(5) =10585a(6) =46657a(7) =62745a(8) =162401a(9) =410041a(10) =449065a(11) =5148001a(12) =5632705a(13) =6313681a(14) =6840001a(15) =7207201a(16) =11119105a(17) =11921001a(18) =19683001a(19) =21584305a(20) =26719701a(21) =41298985a(22) =55462177a(23) =64774081a(24) =67371265a(25) =79411201a(26) =83966401a(27) =87318001a(28) =99861985a(29) =100427041