118498domain: NAppears in sequencesCoordination sequence for {A_7}* lattice.at n=8A008535Numbers k such that sum_{i=1..k} d(i)^2 is a square c^2, where d(i) is the number of divisors of i.at n=30A186429Numbers k such that sopfr(k) = tau(k)^3.at n=31A305349