Would someone be kind enough to explain to me why the following calculation
produces a number when I use "15" but produces a missing for values > 18.
This occurs whether I am doing a 'display' or 'generating' a variable.
. di 9^140*(15^139)*exp(-9*15)/exp(lnfact(139))
.28701151
. di 9^140*(19^139)*exp(-9*19)/exp(lnfact(139))
[no output produced]
