For those wondering about skill assist values.

[nstgc]

Poking around Global.gamedatabundle I found the values for skill assists.

 

The left has the party total for a skill (sans the character being assisted) and the right has the assist value.

 

1:1

2:2

4:3

7:4

11:5

16:6

22:7

29:8

37:9

46:10

 

For those who don't care for memorization, the total amount needed T to get an assist of A is

 

 

T = 1 + ((A-1)^2 +A -1)/2
T = 1 + \frac {(A-1)^2 +A -1}2

The second one is LaTeX.

 

From this we can see that the next value would 56:11 followed by 67:12 and so on.