Odd numbers k such that {1..k-1} cannot be partitioned into disjoint sets I, J such that 2I == -J (mod k) and I, J are unions of cyclotomic cosets mod k.
A028312
Odd numbers k such that {1..k-1} cannot be partitioned into disjoint sets I, J such that 2I == -J (mod k) and I, J are unions of cyclotomic cosets mod k.
Terms
- a(0) =3a(1) =9a(2) =11a(3) =15a(4) =19a(5) =21a(6) =27a(7) =33a(8) =39a(9) =43a(10) =45a(11) =51a(12) =55a(13) =57a(14) =59
External references
- oeis: A028312