Assuming team skill XP-per-level is the same as regular levels, just double the XP every 7 levels.
99 is 13mil, 106 is 26 mil, etc.
Start from the XP required for level 94 and double the XP every 7 levels - this works out to 66,644,252,557,312 at 255.
66 Trillion XP. Let's just say anything over level 130 isn't ever going to happen.