Calculator for several combinatorics and statistics functions:

Factorial | Subfactorial | Binomial Coefficient | Central Binomial Coefficient | Repetition | Catalan Number | Lah Number | Odds Ratio

Calculate Lah Number

Ln,k = ( n-1 ) n!
k-1 k!
Lah numbers express rising factorials in terms of falling factorials.
Enter for n and k positive integers smaller as 171. n must be larger as k. Then press Calculate to determine the Lah number.

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See also Statistics Calculator