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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 17 |
| 4 | 97 |
| 5 | 1676 |
| 6 | 21241 |
| 7 | 214259 |
| 8 | 5020449 |
| 9 | 34808102 |
| 10 | 7233300201 |
| 11 | 46070142226 |
| 12 | 7806783217105 |
| 13 | 165239209697109 |
| 14 | 1608006723911113 |
| 15 | 48560388990668468 |
| 16 | 4867006141797699265 |
| 17 | 530779430908845468654 |
| 18 | 18442832496573633213385 |
[0,1,17,97,1676,21241,214259,5020449,34808102, 7233300201,46070142226,7806783217105, 165239209697109,1608006723911113, 48560388990668468,4867006141797699265, 530779430908845468654,18442832496573633213385] |