| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 68 |
| 3 | 1032 |
| 4 | 11206 |
| 5 | 130041 |
| 6 | 1605061 |
| 7 | 18898817 |
| 8 | 221713421 |
| 9 | 2603590141 |
| 10 | 30590068274 |
| 11 | 358629316808 |
| 12 | 4202604203316 |
| 13 | 49240804480589 |
| 14 | 576952221011516 |
| 15 | 6759580424358381 |
| 16 | 79191080974685751 |
| 17 | 927729156804024461 |
[1,68,1032,11206,130041,1605061,18898817, 221713421,2603590141,30590068274,358629316808, 4202604203316,49240804480589,576952221011516, 6759580424358381,79191080974685751, 927729156804024461] |