30078720domain: NAppears in sequences3rd differences of factorial numbers.at n=8A001565Number of permutations p of [n] with p(i) <> i^2.at n=11A187847Number of acyclic orientations of the Turán graph T(n,8).at n=11A267388Ninth column of Euler's difference table in A068106.at n=10A284205