201180672000domain: NAppears in sequencesa(n) = prime(n-1)! * prime(n)!.at n=3A061025Product of nonzero remainders of n mod k, for k = 1,2,3,...,n.at n=24A173392A091137(n)/(n+1).at n=12A176493Number of permutations of {1,2,3,...,n} such that no multiples of 3 are adjacent.at n=15A258216