a(n) is the largest Carmichael number of the form prime(n)*prime(n')*prime(n") with n < n' < n", or 0 if no such number exists.
A141706
a(n) is the largest Carmichael number of the form prime(n)*prime(n')*prime(n") with n < n' < n", or 0 if no such number exists.
Terms
- a(0) =0a(1) =561a(2) =10585a(3) =52633a(4) =0a(5) =530881a(6) =7207201a(7) =1024651a(8) =1615681a(9) =5444489a(10) =471905281a(11) =36765901a(12) =2489462641a(13) =564651361a(14) =958762729a(15) =17316001a(16) =178837201a(17) =1574601601a(18) =7991602081a(19) =597717121a(20) =962442001a(21) =4461725581a(22) =167385219121a(23) =43286923681
External references
- oeis: A141706