a = 0.66 , b = 1 , n = 20 .  
q = quantile,
e = Estimated quantile, using formula and p1 = sqrt(q),
s = Simulated quantile, from  1e+06  simulations
(each summing  20  Paretos),


r = ratio (est/sim).


--------------------------------------
q:    e:    s:    r:
--------------------------------------


1e-04    37.56047    40.66626    0.9236274 
0.001    45.82574    48.38829    0.9470419 
0.005    56.1039    58.17751    0.9643572 
0.01    62.84087    64.19523    0.9789026 
0.02    72.06059    72.5278    0.9935582 
0.03    79.20735    78.9551    1.003195 
0.04    85.40954    84.41779    1.011748 
0.05    91.0699    89.32982    1.019479 
0.06    96.38488    93.9471    1.025949 
0.07    101.4674    98.26453    1.032594 
0.08    106.3893    102.4405    1.038548 
0.09    111.2001    106.5956    1.043196 
0.1    115.9354    110.6645    1.047629 
0.2    163.2531    151.0655    1.080678 
0.3    217.4882    197.0483    1.103730 
0.4    286.6606    256.7624    1.116443 
0.5    382.1722    341.4460    1.119275 
0.6    526.1109    474.5766    1.108590 
0.7    770.7573    714.9012    1.078131 
0.8    1278.220    1260.456    1.014094 
0.9    2905.536    3372.427    0.8615565