152688

Appears in sequences

• Numbers of perifusenes with one internal vertex (see Cyvin et al. for precise definition).at n=9A122740
• Number of n X n arrays of squares of integers summing to 11.at n=2A159383
• For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u*x+v*y with u,v minimal; a(n) = n^4*s, where s is the population variance of the values of |u|.at n=15A345689