31933440domain: NAppears in sequencesSecond (unsigned) column sequence of triangle A062140 (generalized a=4 Laguerre).at n=7A062199Product of all n - d, where 1 < d < n and d is a divisor of n.at n=23A072512Numbers whose divisors have a mean abundancy index that is larger than 3.at n=16A374779