223720

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n+1)/3.at n=25A048045
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n+2)/3.at n=25A048078
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n+3)/3.at n=25A048089