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Derangements: permutations with no fixed point

Source: R/enumerative_native.R
morie_derangements.Rd

\(D_n = n D_{n-1} + (-1)^n\).

Usage

morie_derangements(n)

Arguments

n

Non-negative whole number.

Value

A morie_bigint.

Examples

morie_derangements(n = 5L)
#> 44