33355944

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= n/3.at n=28A047196
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-1)/3.at n=28A048008
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-2)/3.at n=28A048019