AUTHOR
Stephen P. Humphries (steve(AT)math.byu.edu)
Stephen P. Humphries (steve(AT)math.byu.edu)
Let G be the graph vith n vertices, the ith vertex consisting of all multiples of i <= n, where edges indicate that the vertices intersect; a(n) = |n-(number of edges of G)|.
nonn,new
Stephen P. Humphries (steve@math.byu.edu)