Odd integers k such that 3^((k-1)/2) + 1 == 0 (mod k*(k-1)/2).
A337828
Odd integers k such that 3^((k-1)/2) + 1 == 0 (mod k*(k-1)/2).
Terms
- a(0) =5a(1) =101a(2) =62501a(3) =1020101a(4) =31562501a(5) =139476101a(6) =637562501a(7) =789062501a(8) =985502501a(9) =2656262501a(10) =7455062501a(11) =19726562501a(12) =53662562501
External references
- oeis: A337828