765450

Appears in sequences

• Theta series of extremal 3-modular even lattice in dimension 30.at n=4A034625
• Triangular array T(n,k) read by rows, giving number of labeled free trees such that the root is smaller than all its children, with respect to the number n of vertices and to the degree k of the root.at n=40A071210
• Stirling2 triangle with scaled diagonals (powers of 9).at n=32A075504
• Fifth column of triangle A075504.at n=3A076011
• a(n) = (n^3 + n)*3^n.at n=6A121607
• Expansion of Product_{k>=1} 1 / (1 - 2*3^k*x^k).at n=7A300583