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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 43 |
| 4 | 661 |
| 5 | 45503 |
| 6 | 14835966 |
| 7 | 19030289368 |
| 8 | 96523753164218 |
| 9 | 1826134533496656481 |
| 10 | 136782939777235335759015 |
| 11 | 38134547664565961218637677016 |
| 12 | 42464787999263932204904982967955033 |
| 13 | 176203582974534986934299369142808689004350 |
[1,2,7,43,661,45503,14835966,19030289368, 96523753164218,1826134533496656481, 136782939777235335759015, 38134547664565961218637677016, 42464787999263932204904982967955033, 176203582974534986934299369142808689004350] |