1081574
domain: N
Appears in sequences
- Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= n/3.at n=24A047193
- Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n-1)/3.at n=24A048005
- Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n+1)/3.at n=24A048038
- a(n) = binomial(n+8,8) - 1.at n=17A165618