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) | 
|---|---|
| -0.15643446504023086901 + 1.7941761774325363168e-378j | 4.2e-127, 4.2e-127j | 
| -0.95105651629515357212 - 4.3898626046221318528e-374j | 2.62e-122, 2.62e-122j | 
| -0.3090169943749474241 - 1.0096422424222794299e-377j | 7.25e-126, 7.25e-126j | 
| 0.58778525229247312917 + 4.3123271177927981246e-374j | 8.65e-124, 8.65e-124j | 
| 0.7071067811865475244 - 3.2491157097791225777e-378j | 4.02e-123, 4.02e-123j | 
| -0.98768834059513772619 - 4.2277324930650003054e-384j | 1.15e-122, 1.15e-122j | 
| -0.89100652418836786236 - 5.0212416078470746891e-384j | 2.63e-122, 2.63e-122j | 
| -0.45399049973954679156 - 6.887244745417054541e-387j | 8.64e-125, 8.64e-125j | 
| 0.3090169943749474241 - 4.1734995182105555858e-385j | 8.08e-126, 8.08e-126j | 
| -0.58778525229247312917 - 3.6534998950513744238e-388j | 9.77e-124, 9.77e-124j | 
| -0.8090169943749474241 + 1.3587931693196022724e-386j | 1.64e-122, 1.64e-122j | 
| 2.8375844190846062613e-387 - 4.1277287170925905083e-387j | 9.52e-386, 9.52e-386j | 
| 0.8090169943749474241 + 1.2607873794476550218e-392j | 1.41e-122, 1.41e-122j | 
| 0.45399049973954679156 - 6.7971418752080265039e-403j | 9.31e-125, 9.31e-125j | 
| 0.15643446504023086901 - 2.8316713510264478193e-412j | 4.63e-127, 4.63e-127j | 
| -0.7071067811865475244 + 2.3896531781536975771e-422j | 3.96e-123, 3.96e-123j | 
| 0.95105651629515357212 + 3.5016320218082396239e-444j | 3.19e-122, 3.19e-122j | 
| 0.89100652418836786236 - 6.085898415786809913e-480j | 3.49e-122, 3.49e-122j | 
| 0.98768834059513772619 + 7.5171048099174095338e-492j | 1.02e-122, 1.02e-122j | 
| Weight (ball center) | Error (ball radius) | 
|---|---|
| 0.048776412907378839303 + 5.5243823600993341795e-375j | 5.87e-44, 8.48e-104j | 
| 0.0047745751406263143974 - 3.2649779447016929319e-375j | 9.05e-45, 1.31e-104j | 
| 0.045225424859373685603 - 5.2667685784066027557e-375j | 3.86e-44, 5.57e-104j | 
| 0.032725424859373685603 - 2.8359401919370372439e-375j | 1.64e-45, 2.37e-105j | 
| 0.025 - 8.3727697533663141952e-375j | 6.18e-46, 8.92e-106j | 
| 0.0012235870926211606971 - 1.4328418986590579404e-375j | 1.64e-45, 2.36e-105j | 
| 0.010305368692688171771 + 7.8339152017569297269e-375j | 2.21e-45, 3.18e-105j | 
| 0.039694631307311828229 + 5.145877646755575359e-375j | 3.1e-45, 4.48e-105j | 
| 0.045225424859373685603 - 8.5728720920236892947e-375j | 2.83e-46, 4.09e-106j | 
| 0.032725424859373685603 - 5.1538462530837975238e-375j | 8.15e-46, 1.18e-105j | 
| 0.017274575140626314397 - 5.8718231156396394903e-375j | 4.41e-46, 6.36e-106j | 
| 0.05 - 5.9786087392462748111e-375j | 2.56e-46, 3.7e-106j | 
| 0.017274575140626314397 + 2.9367323544569959977e-375j | 7.04e-49, 1.02e-108j | 
| 0.039694631307311828229 + 1.4035294141616197276e-374j | 1.82e-47, 2.63e-107j | 
| 0.048776412907378839303 + 6.8113266477141097238e-375j | 4.45e-47, 6.42e-107j | 
| 0.025 + 5.3306437244674974477e-375j | 3.41e-47, 4.91e-107j | 
| 0.0047745751406263143974 + 4.5660691722234810493e-376j | 8.64e-51, 1.25e-110j | 
| 0.010305368692688171771 - 1.2200884880524023724e-375j | 1.9e-50, 2.78e-110j | 
| 0.0012235870926211606971 - 1.0424193897247925577e-376j | 2.19e-51, 3.13e-111j | 
All rules of Chebyshev U (second kind) type can be downloaded here packed into a single file.