51416

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=14A345695
• Number of free polyominoids with n cells, allowing right-angled corner-connections.at n=5A365999