-31752

Appears in sequences

• Dirichlet inverse of sigma_3 function (A001158).at n=29A053825
• A real part quaternion-Hadamard matrix self-similarity coefficient triangle: m(n)=real(quaternion_Hadamard(2^n)).at n=39A158612
• a(n) = Sum_{d divides n} (-1)^(d + n/d) * d^3.at n=29A321559
• Dirichlet g.f.: zeta(2*s) / (zeta(s) * zeta(s-3)).at n=29A328640