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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 11 |
| 3 | 71 |
| 4 | 701 |
| 5 | 9467 |
| 6 | 168599 |
| 7 | 3860009 |
| 8 | 111498091 |
| 9 | 4002608003 |
| 10 | 176359202639 |
| 11 | 9437436701437 |
| 12 | 607818993573569 |
| 13 | 46744099128452807 |
| 14 | 4262700354254812091 |
| 15 | 458091929703695291747 |
| 16 | 57691186909930154615407 |
| 17 | 8471601990692484416847631 |
| 18 | 1443868262009075144775972529 |
[2,3,11,71,701,9467,168599,3860009,111498091, 4002608003,176359202639,9437436701437, 607818993573569,46744099128452807, 4262700354254812091,458091929703695291747, 57691186909930154615407,8471601990692484416847631, 1443868262009075144775972529] |