| term-by-term sum = 1.5961632439130233 using 20 terms | |
| term-by-term sum = 1.5759958390005426 using 13 terms | |
| exact value = 1.6449340668482264 | |
| accelerated sum = 1.6449340668166479 using 13 terms | |
| estimated error = 0.0000000000508580 | |
| actual error = -0.0000000000315785 |