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_scienceStatisticCombinationWithRepetition

Get the number of k-combinations with repetition (or k-multicombination) from n given elements. The n elements are not necessarily distincts. The mathematic formula is (n+k-1)! / (k!(n-1)!)

Prototype :

fun [I I] S

• I : n, with n < 170.
• I : k, with k < n.

Return : S a new string number or nil if error

See also :