multichoose {iterpc} | R Documentation |
This function calculates the multinomial coefficient
\frac{(\sum n_j)!}{\prod n_j!}.
where n_j
's are the number of multiplicities in the multiset.
multichoose(n, bigz = FALSE)
n |
a vector of group sizes |
bigz |
use gmp's Big Interger |
multinomial coefficient
# (3+1+1)!/ (3! 1! 1!) = 20
multichoose(c(3,1,1))