137640

Appears in sequences

• The Wiener index of the Kneser graph K(n,2) (n>=5).at n=27A228306
• Number of ways to place 2 points on a triangular grid of side n so that they are not adjacent.at n=30A239568
• a(n) = 144*n^2 - 24*n (n>=1).at n=30A305072