SirUrza |
I asked this awhile back, there isn't one exactly.
I don't remember what the number was, but the XP chart is actually based on having a fix number of encounters each level.
Jason Bulmahn Director of Game Design |
The reason why you are having some troubles nailing it down is because there is a small amount of rounding involved.
The system starts out by assuming 13.3, 20, and 30 encounters per level in a group of four characters. The XP per encounter formula follows a base 400, increased by 50% for the next level (600), and increased by 100% (from the first level base) for the level after that (800). From that point forward, the XP system follows this progression, with each level worth double the amount of the level two levels lower. This XP system allows the encounter building system and the XP system to sync up.
Complicated, but it works.
Jason Bulmahn
Lead Designer
Paizo Publishing