1901637domain: NAppears in sequencesNumber of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= n/3.at n=23A047194Duplicate of A047194.at n=23A048039Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n+2)/3.at n=23A048072