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| n | a(n) |
|---|---|
| 1 | 4227 |
| 2 | 21829 |
| 3 | 105206 |
| 4 | 607539 |
| 5 | 3413516 |
| 6 | 21593010 |
| 7 | 134575906 |
| 8 | 924460811 |
| 9 | 6207464355 |
| 10 | 45401368428 |
| 11 | 320074824585 |
| 12 | 2438445808960 |
| 13 | 17698173021054 |
| 14 | 138099810742762 |
| 15 | 1019098153303299 |
| 16 | 8058980038095509 |
| 17 | 60035917549887504 |
[4227,21829,105206,607539,3413516,21593010, 134575906,924460811,6207464355,45401368428, 320074824585,2438445808960,17698173021054, 138099810742762,1019098153303299,8058980038095509, 60035917549887504] |