Odd numbers k such that {1..k-1} can be partitioned into disjoint sets I, J with 2I == -J (mod k) such that I, J are unions of cyclotomic cosets mod k.
A028311
Odd numbers k such that {1..k-1} can be partitioned into disjoint sets I, J with 2I == -J (mod k) such that I, J are unions of cyclotomic cosets mod k.
Terms
- a(0) =5a(1) =7a(2) =13a(3) =17a(4) =23a(5) =25a(6) =29a(7) =31a(8) =35a(9) =37a(10) =41a(11) =47a(12) =49a(13) =53a(14) =61
External references
- oeis: A028311