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| n | a(n) |
|---|---|
| 0 | 16 |
| 1 | 17 |
| 2 | 50 |
| 3 | 817 |
| 4 | 1684 |
| 5 | 2501 |
| 6 | 81716 |
| 7 | 84217 |
| 8 | 250150 |
| 9 | 4086617 |
| 10 | 8423384 |
| 11 | 12510001 |
| 12 | 408743416 |
| 13 | 421253417 |
| 14 | 1251250250 |
| 15 | 20441257417 |
| 16 | 42133765084 |
| 17 | 62575022501 |
| 18 | 2044534485116 |
| 19 | 2107109507617 |
| 20 | 6258753500350 |
| 21 | 102247165513217 |
| 22 | 210753084526784 |
| 23 | 313000250040001 |
[16,17,50,817,1684,2501,81716,84217,250150, 4086617,8423384,12510001,408743416,421253417, 1251250250,20441257417,42133765084,62575022501, 2044534485116,2107109507617,6258753500350, 102247165513217,210753084526784,313000250040001] |