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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 11 |
| 8 | 131 |
| 9 | 17291 |
| 10 | 298995971 |
| 11 | 29799530324409601 |
| 12 | 80728364323218860837749108564353 |
| 13 | 49748616842002716055120167595193322161740083228987208037683201 |
[1,1,1,1,1,3,11,131,17291,298995971, 29799530324409601, 80728364323218860837749108564353, 49748616842002716055120167595193322161740083228987\ 208037683201] |