Example:
-17 energy to distribute for OD
-2 mexes: 3 income and 4 income

Current system: Split in 9:16 ratio
-> 6.12 for first, 10.88 for second mex
-> OD multipliers:
     sqrt(1 + 6.12/4)  = 1.5906
	 sqrt(1 + 10.88/4) = 1.9287
-> Total OD: 3 * 1.5906 + 4 * 1.9287 = 12.4867

My system proposes 5 energy for first and 12 for second.
-> OD multipliers:
     sqrt(1 + 5/4)  = 1.5
	 sqrt(1 + 12/4) = 2
-> Total OD: 3 * 1.5 + 4 * 2 = 12.5

Formulas for my system:
Inputs:
-mex incomes: m_i
-number of mexes: n
-energy available for overdrive: E
Outputs:
-energy distribution per mex: e_i

k = 1/(4 sqrt(E+4n)) * sqrt(sum(m_i²))
e_i = m_i²/(16 k²) - 4