Looking at Wikipedia's table (found at https://en.wikipedia.org/wiki/Derangeme ... rangements ), I'd say that A = !A is somewhere between 3 and 4. The exact number is in question, as I believe fractional subfactorial is somewhat undefined.
Thanks
Luc "Axiom of Paradox" French
Thanks
Luc "Axiom of Paradox" French
Statistics: Posted by Lubaf — 17 Nov 2024 01:45