122451domain: NAppears in sequencesa(n) = (10*n+3)*(10*n+17).at n=34A152579Numbers k such that d(k) < d(k - 1) and d(k) < d(k + 1), and d(k) is also a record for this type of number where d(k) is the number of divisors of k.at n=9A369155