63712

Appears in sequences

• a(n) = n*(n+1)*(11*n +10)/6.at n=32A254407
• a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=3} (n-|i|)*(n-|j|).at n=30A331774
• Numbers k such that A181894(k)+1 = A181894(k+1).at n=38A333802
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from an n x n square grid of points using only a compass.at n=25A359935