153468

Appears in sequences

• a(n) = n^2*(n^2 - 1)/4.at n=28A006011
• Number of labeled rooted trees with 3-colored leaves.at n=5A038050
• a(n) = Sum_{k=0..n} k^5 * 2^(n-k) * binomial(n,k).at n=6A383139