219765

Appears in sequences

• Number of dyslexic rooted compound windmills with n nodes and leaves of 2 colors.at n=11A032290
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= n/3.at n=21A047199
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n-1)/3.at n=21A048011
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n+1)/3.at n=21A048044