807403520

Appears in sequences

• a(n) = binomial(n,3)*2^(n-3).at n=19A001789
• Coordination sequence for diamond structure D^+_20. (Edges defined by l_1 norm = 1.)at n=13A035886
• Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.at n=17A234133
• a(n) = 2^(n-3)*(3*binomial(n,4) + 4*binomial(n,2) + 8).at n=19A383868