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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 861 |
| 3 | 107968 |
| 4 | 7849844 |
| 5 | 525063657 |
| 6 | 38204132307 |
| 7 | 2854004857534 |
| 8 | 209528571255971 |
| 9 | 15268341534543913 |
| 10 | 1116005261918179242 |
| 11 | 81729420101718397601 |
| 12 | 5982387762928460622575 |
| 13 | 437688956165613139223655 |
[1,861,107968,7849844,525063657,38204132307, 2854004857534,209528571255971,15268341534543913, 1116005261918179242,81729420101718397601, 5982387762928460622575,437688956165613139223655] |