15856206

Appears in sequences

• Coordination sequence for 7-dimensional cubic lattice.at n=21A008415
• a(n) = [x^(3*n)] ( (1 + x)/(1 - x) )^n.at n=7A333715
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) is the coefficient of x^(k*n) in expansion of ( (1 + x)/(1 - x) )^n.at n=62A336521
• Square array read by ascending antidiagonals: T(n,k) = [x^(n*k)] ((1 + x)/(1 - x))^k for n, k >= 1.at n=42A363418