68541

Appears in sequences

• a(n) = Sum_{d|n} sigma(n/d)*d^3.at n=38A027847
• a(n) = (9*n^4 + 4*n^3 - n)/2.at n=11A047786
• a(n) = A100092(n^2+1).at n=16A100093
• a(n) = n*(7*n^2 - 3*n - 1)/3.at n=31A214659
• a(n) = Sum_{d|n} d^3*A000593(n/d).at n=38A288419