810030

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 60.at n=29A031738
• Given n colors, sequence gives number of ways to color the vertices of a square such that no edge has the same color on both of its vertices.at n=30A091940
• a(n) = 900*n^2 + 30.at n=30A158672