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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 63 |
| 3 | 1034 |
| 4 | 14474 |
| 5 | 185864 |
| 6 | 2269788 |
| 7 | 26809924 |
| 8 | 309224756 |
| 9 | 3503496007 |
| 10 | 39147452729 |
| 11 | 432599522197 |
[2,63,1034,14474,185864,2269788,26809924, 309224756,3503496007,39147452729,432599522197] |