61244

Appears in sequences

• a(n) = (9*n+1)*(9*n+8).at n=27A001534
• Irregular table read by rows: Place a point on the integer coordinates, up to |n|, along all four axial directions on a Cartesian plane, and then join an infinite straight line between every pair of points: T(n,k) is the number of k-sided finite polygons formed, for k>=3, in the resulting graph.at n=49A386562