Starting with polynomial:
P : 3/2*t^2 - 1/2
Extension levels are: 2 16
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Trying to find an order 16 Kronrod extension for:
P1 : 3/2*t^2 - 1/2
Solvable: 1
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Ending with final polynomial:
P : 3/2*t^18 - 318937/47234*t^16 + 9281490/732127*t^14 - 272844390/21231683*t^12 + 132075125/17371377*t^10 - 25545611/9650765*t^8 + 115155586/221967595*t^6 - 6801938/133180557*t^4 + 3276767/1686953722*t^2 - 20605/1686953722
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Computing nodes and weights
  current precision for roots: 53
  current precision for roots: 106
 current precision for weights: 53
Linear system for weights solvable: 1
  current precision for roots: 106
  current precision for roots: 212
 current precision for weights: 106
Linear system for weights solvable: 1
  current precision for roots: 212
  current precision for roots: 424
 current precision for weights: 212
Linear system for weights solvable: 1
Sufficient bits for target precision reached
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The nodes are:
| (0.99315423719328915677 + 3.2159793850035483589e-425j)  +/-  (2.38e-122, 2.38e-122j)
| (0.088015843352330596119 + 3.1062617750189583013e-431j)  +/-  (1.62e-127, 1.62e-127j)
| (-0.96271923788205868743 + 1.5914044700945341726e-430j)  +/-  (4.63e-122, 4.63e-122j)
| (-0.82060265915549183574 - 8.1340055880174956987e-438j)  +/-  (1.58e-122, 1.58e-122j)
| (0.90534757705968229871 - 1.4319552787504380017e-438j)  +/-  (4.27e-122, 4.27e-122j)
| (0.71021983147737219669 - 3.9545821665588543601e-442j)  +/-  (4.45e-123, 4.45e-123j)
| (-0.99315423719328915677 + 5.9948930503153458355e-441j)  +/-  (2.35e-122, 2.35e-122j)
| (-0.90534757705968229871 + 1.2276863585605814137e-452j)  +/-  (4.11e-122, 4.11e-122j)
| (-0.71021983147737219669 - 1.4709211963864756854e-463j)  +/-  (3.88e-123, 3.88e-123j)
| (0.26123161566203463135 - 4.0155665085522373097e-469j)  +/-  (3.64e-126, 3.64e-126j)
| (0.82060265915549183574 - 7.5136787442065365488e-473j)  +/-  (1.6e-122, 1.6e-122j)
| (0.42609429851921162076 + 3.8495793427732002074e-476j)  +/-  (6.06e-125, 6.06e-125j)
| (-0.57735026918962576451 + 2.8935179460225422737e-476j)  +/-  (6.9e-124, 6.9e-124j)
| (-0.42609429851921162076 - 1.3542898648124827677e-478j)  +/-  (6.23e-125, 6.23e-125j)
| (-0.088015843352330596119 - 2.1919847192787981772e-481j)  +/-  (1.62e-127, 1.62e-127j)
| (0.57735026918962576451 - 4.62225923531223587e-486j)  +/-  (6.24e-124, 6.24e-124j)
| (0.96271923788205868743 + 3.5688465268204805956e-490j)  +/-  (4.96e-122, 4.96e-122j)
| (-0.26123161566203463135 - 1.0303213631493919572e-495j)  +/-  (3.64e-126, 3.64e-126j)
-------------------------------------------------
The weights are:
| (0.017741835552303746105 - 3.7634009298719099999e-425j)  +/-  (1.34e-45, 2.91e-105j)
| (0.17556078823328390528 - 6.0825137108890330718e-426j)  +/-  (8.11e-46, 1.77e-105j)
| (0.043612686827125223796 - 8.9215120745759150494e-427j)  +/-  (1.91e-46, 4.15e-106j)
| (0.097991861241370665455 - 2.0372919502742886445e-426j)  +/-  (1.62e-46, 3.52e-106j)
| (0.071194676572517374733 - 3.2303016028363668084e-425j)  +/-  (4.34e-47, 9.45e-107j)
| (0.12224140749511570233 - 1.5359765771610738866e-425j)  +/-  (4.35e-47, 9.46e-107j)
| (0.017741835552303746105 + 2.8732844127983708227e-427j)  +/-  (3.14e-47, 6.83e-107j)
| (0.071194676572517374733 + 1.4938373085345828288e-426j)  +/-  (4.59e-47, 9.98e-107j)
| (0.12224140749511570233 + 2.5512327237278117764e-426j)  +/-  (6.98e-48, 1.52e-107j)
| (0.16994474718511271606 + 7.3726720523275692134e-426j)  +/-  (1.07e-48, 2.33e-108j)
| (0.097991861241370665455 + 2.1415801295734405532e-425j)  +/-  (3.12e-49, 6.87e-109j)
| (0.15890186627847457469 - 9.1238749093920600771e-426j)  +/-  (5.62e-49, 1.22e-108j)
| (0.14281013061469609156 - 3.074885784042189365e-426j)  +/-  (3.06e-49, 6.61e-109j)
| (0.15890186627847457469 + 3.6454225870116017722e-426j)  +/-  (1.14e-49, 2.48e-109j)
| (0.17556078823328390528 + 5.0922070725287369121e-426j)  +/-  (3.66e-50, 8.11e-110j)
| (0.14281013061469609156 + 1.1614077993567839324e-425j)  +/-  (3.31e-50, 7.93e-110j)
| (0.043612686827125223796 + 5.7336828544734762837e-425j)  +/-  (9.31e-51, 2.23e-110j)
| (0.16994474718511271606 - 4.3018993586984776661e-426j)  +/-  (2.57e-50, 5.31e-110j)
