24987792457domain: NAppears in sequencesSublattices of index n in generic 11-dimensional lattice.at n=9A038998Sum of divisors of 10^n.at n=10A046915Sum of the divisors of n^n (A000312).at n=10A062727a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 12.at n=9A160960