| n | basic approximation | with A correction |
| 3 | 8.1% | 3.6% |
| 10 | 1.6% | 0.24% |
| 30 | 4.8 × 10−3 | 2.5 × 10−4 |
| 100 | 1.4 × 10−3 | 2.2 × 10−5 |
| 300 | 4.6 × 10−4 | 2.4 × 10−6 |