3780295domain: NAppears in sequencesProduct of n^2 and n-th tetrahedral number: a(n) = n^3*(n+1)*(n+2)/6.at n=29A119771Composite numbers m such that tau_k(m) = m for some k, where tau_k is the k-th Piltz divisor function (A077592).at n=29A327774