308115

Appears in sequences

• Triangle of Schroeder paths counted by number of diagonal steps not preceded by an east step.at n=57A108916
• Number of distinct cycles without repeated edges on the multigraph consisting of two vertices joined by n edges.at n=10A178061
• 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 |v|.at n=17A345690