Subfactorial/Examples/5/Mistake

Source Work

 * The Dictionary
 * $44$
 * $44$

Mistake

 * Subfactorial $5 = 5! \left({1 - 1 / {1!} + 1 / {2!} - 1 / {3!} - 1 / {4!} - 1 / {5!} }\right) = 44$

There is an incorrect sign.

It should read:
 * Subfactorial $5 = 5! \left({1 - 1 / {1!} + 1 / {2!} - 1 / {3!} + 1 / {4!} - 1 / {5!} }\right) = 44$