One starts from the polynomial
      
      and extends one by one with
      
      until the final polynomial defining this rule is reached.
      Note: Polynomials might be truncated due to size!
      The complete polynomials are included in the download.
    
| Node (ball center) | Error (ball radius) | 
|---|---|
| 0.8090169943749474241 + 4.0761538771797797299e-64j | 2.76e-63, 2.76e-63j | 
| -0.3090169943749474241 + 2.1125910064389710154e-76j | 6.55e-64, 6.55e-64j | 
| -0.8090169943749474241 + 1.3520862912410077395e-92j | 7.6e-64, 7.6e-64j | 
| 0.3090169943749474241 - 2.8424948577935271301e-114j | 6.55e-64, 6.55e-64j | 
| Weight (ball center) | Error (ball radius) | 
|---|---|
| 0.06909830056250525759 - 9.8930332749760163204e-65j | 2.38e-30, 1.09e-61j | 
| 0.18090169943749474241 - 6.5953555166495895028e-65j | 1.09e-30, 5.15e-62j | 
| 0.06909830056250525759 + 1.7407255206206820426e-65j | 4.63e-31, 2.32e-62j | 
| 0.18090169943749474241 + 1.4747663271004923781e-64j | 8.31e-31, 3.42e-62j | 
All rules of Chebyshev U (second kind) type can be downloaded here packed into a single file.