Numbers k such that k divides DivisorSigma(2*j-1, k) for all j; i.e., all odd-power-sums of divisors of k are divisible by k.
A066289
Numbers k such that k divides DivisorSigma(2*j-1, k) for all j; i.e., all odd-power-sums of divisors of k are divisible by k.
Terms
- a(0) =1a(1) =6a(2) =120a(3) =672a(4) =30240a(5) =32760a(6) =31998395520
External references
- oeis: A066289