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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 63 |
| 3 | 819 |
| 4 | 17199 |
| 5 | 636363 |
| 6 | 43909047 |
| 7 | 5839903251 |
| 8 | 1524214748511 |
| 9 | 788019024980187 |
| 10 | 810871576704612423 |
| 11 | 1664719346974569304419 |
| 12 | 6827014041942708717422319 |
| 13 | 55961034101804383356710748843 |
| 14 | 917145387894472038833132462787927 |
[1,7,63,819,17199,636363,43909047,5839903251, 1524214748511,788019024980187,810871576704612423, 1664719346974569304419,6827014041942708717422319, 55961034101804383356710748843, 917145387894472038833132462787927] |