96113domain: NAppears in sequencesLeast k such that k(k+1)(k+2)...(k+n) divides C(2k,k).at n=12A072119Least k such that k(k+1)(k+2)...(k+n) divides C(2k,k).at n=13A072119Number of commuting 4-tuples of elements from S_n, divided by n!.at n=10A226313