Least k such that the cyclotomic polynomial Phi(k,x) contains n or -n as a coefficient, where k is restricted to be the product of 3 distinct prime numbers.
A134518
Least k such that the cyclotomic polynomial Phi(k,x) contains n or -n as a coefficient, where k is restricted to be the product of 3 distinct prime numbers.
Terms
- a(0) =105a(1) =385a(2) =2431a(3) =2717a(4) =8671a(5) =17119a(6) =19499a(7) =20213a(8) =20213a(9) =34891a(10) =34891a(11) =93439a(12) =93439a(13) =93439a(14) =93439a(15) =93439a(16) =282367a(17) =282367a(18) =282367a(19) =282367a(20) =282367a(21) =282367a(22) =282367a(23) =282367a(24) =282367a(25) =617927a(26) =617927a(27) =849647a(28) =849647a(29) =849647
External references
- oeis: A134518