1088123400

Appears in sequences

• Sublattices of index n in generic 12-dimensional lattice.at n=5A038999
• a(n) = sigma(6^(n-1)).at n=11A160869
• a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 13.at n=5A160972