Nothing
`var.periodic.correlation` <-
function(l, m, n, p)
{
if((l %% p) == 0)
(n - l/p)/(n * (n + 2))
else (n - trunc((l - m + p)/p))/n^2
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.