R/ff.R
In kStatistics: Unbiased Estimators for Cumulant Products and Faa Di Bruno's Formula

ff <-
function (n=1,k) {
  if (k>n) stop("k > n")
  if (n<0) stop("n < 0")
  nff<-1;
  for (i in 0:(k-1) ) nff<-nff*(n-i);
  return(nff);       
}

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kStatistics documentation built on June 8, 2022, 5:05 p.m.

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