Starting with polynomial:
P : t
Extension levels are: 1 16
-------------------------------------------------
Trying to find an order 16 Kronrod extension for:
P1 : t
Solvable: 1
-------------------------------------------------
Ending with final polynomial:
P : t^17 - 136/33*t^15 + 2380/341*t^13 - 61880/9889*t^11 + 77350/24273*t^9 - 12376/13485*t^7 + 43316/310155*t^5 - 1768/186093*t^3 + 221/1178589*t
-------------------------------------------------
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
-------------------------------------------------
The nodes are:
| (0.99057547531441733568 + 6.053009612029324001e-428j)  +/-  (5.52e-123, 5.52e-123j)
| (-0.95067552176876776122 - 8.256996513447369132e-436j)  +/-  (1.3e-122, 1.3e-122j)
| (-0.88023915372698590212 - 1.4001382207297416431e-450j)  +/-  (1.02e-122, 1.02e-122j)
| (-0.99057547531441733568 - 5.0206146990904034145e-460j)  +/-  (6.19e-123, 6.19e-123j)
| (0.95067552176876776122 + 1.4852198038795092531e-460j)  +/-  (1.37e-122, 1.37e-122j)
| (0.88023915372698590212 - 2.9185179887146926174e-466j)  +/-  (1.18e-122, 1.18e-122j)
| (-0.17848418149584785585 + 4.6412177553667495066e-472j)  +/-  (9.74e-127, 9.74e-127j)
| (-0.78151400389680140693 + 2.2426131528719136715e-477j)  +/-  (4.29e-123, 4.29e-123j)
| (-0.3512317634538763153 + 1.9222695654436915478e-481j)  +/-  (1.31e-125, 1.31e-125j)
| (0.3512317634538763153 - 1.0445147625871978538e-482j)  +/-  (1.32e-125, 1.32e-125j)
| (0.78151400389680140693 + 7.0363011490752127735e-483j)  +/-  (4.38e-123, 4.38e-123j)
| (0.17848418149584785585 + 7.4706862722007041927e-485j)  +/-  (9.74e-127, 9.74e-127j)
| (-0.51269053708647696789 + 3.890982433437866767e-487j)  +/-  (1.49e-124, 1.49e-124j)
| (-0.65767115921669076585 - 4.4586290846157025839e-494j)  +/-  (9.59e-124, 9.59e-124j)
| (1.1031711075174828638e-494 - 2.7706624284775893745e-494j)  +/-  (5.07e-493, 5.07e-493j)
| (0.65767115921669076585 - 1.8768641081156993992e-494j)  +/-  (9.9e-124, 9.9e-124j)
| (0.51269053708647696789 - 7.6792260792895740672e-497j)  +/-  (1.56e-124, 1.56e-124j)
-------------------------------------------------
The weights are:
| (0.02414830286854793196 - 7.7180474415061470729e-428j)  +/-  (3.15e-44, 1.83e-104j)
| (0.055459529373987201129 + 2.5841975300959837589e-429j)  +/-  (1.53e-44, 8.87e-105j)
| (0.085036148317179180884 - 5.0796117592691294936e-429j)  +/-  (8.38e-45, 4.86e-105j)
| (0.02414830286854793196 - 7.3780332378182812777e-430j)  +/-  (6.98e-45, 4.05e-105j)
| (0.055459529373987201129 + 1.2572889097734214722e-427j)  +/-  (4.94e-46, 2.86e-106j)
| (0.085036148317179180884 - 8.6127706191040757052e-428j)  +/-  (2.22e-46, 1.29e-106j)
| (0.17656270536699264633 + 2.4287245875468406838e-428j)  +/-  (3.67e-47, 2.13e-107j)
| (0.11188384719340397109 + 8.0872347228462221316e-429j)  +/-  (4.41e-47, 2.56e-107j)
| (0.16800410215645004451 - 1.9641521822860150443e-428j)  +/-  (2.29e-47, 1.32e-107j)
| (0.16800410215645004451 - 4.1222172195945920299e-428j)  +/-  (1.74e-48, 1.01e-108j)
| (0.11188384719340397109 + 6.8550674716588206104e-428j)  +/-  (1.22e-48, 7.09e-109j)
| (0.17656270536699264633 + 3.4963112829985107345e-428j)  +/-  (1.7e-48, 9.87e-109j)
| (0.15404576107681028808 + 1.5394376695178536858e-428j)  +/-  (1.45e-48, 8.44e-109j)
| (0.13513636846852547329 - 1.1537997895915956068e-428j)  +/-  (9.13e-49, 5.3e-109j)
| (0.17944647035620652546 - 2.9368076479033078576e-428j)  +/-  (1.01e-48, 5.85e-109j)
| (0.13513636846852547329 - 5.7125925445193401923e-428j)  +/-  (8.25e-50, 4.86e-110j)
| (0.15404576107681028808 + 4.8425556180597082461e-428j)  +/-  (1.09e-49, 6.2e-110j)
