22870848000domain: NAppears in sequencesa(n) = Product_{k=1..n} k/floor(n/k).at n=17A076000(5*n+2)!/(2*(n!)^5), n >= 0.at n=3A228080a(n) = multinomial(3*n+2; 2, 3, 3, ..., 3) (n times '3').at n=5A327412