801350

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= n/3.at n=36A047197
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n-1)/3.at n=36A048009
• Number of nonempty subsets of {1,2,...,n} in which exactly 3/4 of the elements are <= (n+1)/3.at n=36A048042
• Numbers k such that A001414(k) and A001414(A004086(k)) are twin primes p, p+2.at n=10A337047