3-Carmichael numbers: Carmichael numbers equal to the product of 3 primes: k = p*q*r, where p < q < r are primes such that a^(k-1) == 1 (mod k) if a is prime to k.
A087788
3-Carmichael numbers: Carmichael numbers equal to the product of 3 primes: k = p*q*r, where p < q < r are primes such that a^(k-1) == 1 (mod k) if a is prime to k.
Terms
- a(0) =561a(1) =1105a(2) =1729a(3) =2465a(4) =2821a(5) =6601a(6) =8911a(7) =10585a(8) =15841a(9) =29341a(10) =46657a(11) =52633a(12) =115921a(13) =162401a(14) =252601a(15) =294409a(16) =314821a(17) =334153a(18) =399001a(19) =410041a(20) =488881a(21) =512461a(22) =530881a(23) =1024651a(24) =1152271a(25) =1193221a(26) =1461241a(27) =1615681a(28) =1857241a(29) =1909001
External references
- oeis: A087788