If that is so, then do you need 3 charisma to have 1 follower? I always thought it was (CH/2)-1, rounded down.
I pretty sure formula works like this. (Ch/2) -1 + (if magnetic personality perk +1) = npc followers limit
magnetic personality was broken, and you couldn't take it with CH 10, only with 9, don't know, if that was corrected...
I'm pretty sure it is:(CH - 1) / 2, rounded down.So for 3 you get 1 NPC. For 4 you get 1.5 followers = 1. For 5 you get 2 NPC, etc.
The Formula is right like this (CH/2) -1= npc followers (round up)
(CH/2)-1 rounded up and (CH-1)/2 rounded down is the same... so don't argue. ;p
But formula you have comes out the same result even tho not formula they use