283140

Appears in sequences

• Number of walks on square lattice. Column y=3 of A052174.at n=9A005561
• a(n) = t(n)*t(n+1)*t(n+2), where t() are the triangular numbers.at n=10A071910
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+521)^2 = y^2.at n=11A129725
• Molecular topological indices of the complete bipartite graphs K_{n,n}.at n=32A192418