317024

Appears in sequences

• For 1<=x<=n, 1<=y<=n with gcd(x,y)=1, write 1 = gcd(x,y) = u*x+v*y with u,v minimal; a(n) = m^2*s, where s is the population variance of the values of v and m is the number of such values.at n=16A345693
• Number of distinct edges among all circles that can be constructed on vertices of an n-sided regular polygon, using only a compass.at n=31A359047