5036862

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-1)/3.at n=26A048010
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-2)/3.at n=26A048021
• Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-3)/3.at n=26A048032