551040

Appears in sequences

• Triangle read by rows giving number of rooted labeled trees with n >= 2 nodes and height d >= 1.at n=25A034855
• a(n) = n!*(3*n^2 - 15*n + 10)/6.at n=4A034861
• a(n) = n!*(3*n^2 - 15*n + 10)/6, n > 4.at n=4A034862