Carmichael numbers k such that k-1 is squarefree.
A257643
Carmichael numbers k such that k-1 is squarefree.
Terms
- a(0) =139952671a(1) =74689102411a(2) =121254376891a(3) =187054437571a(4) =231440115271a(5) =236359158267a(6) =303008129971a(7) =306252926071a(8) =380574791611a(9) =426951670531a(10) =556303918171a(11) =639109148371a(12) =660950414671
External references
- oeis: A257643