| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 11 |
| 3 | 130 |
| 4 | 2517 |
| 5 | 68406 |
| 6 | 2391496 |
| 7 | 102022810 |
| 8 | 5130659561 |
| 9 | 296881218694 |
| 10 | 19415908147836 |
| 11 | 1415538531617772 |
| 12 | 113796709835547767 |
| 13 | 9998149029974754104 |
| 14 | 952980844872975079232 |
| 15 | 97930011125976327934826 |
| 16 | 10791878598088498089377489 |
| 17 | 1269466214540655412954317894 |
[1,2,11,130,2517,68406,2391496,102022810, 5130659561,296881218694,19415908147836, 1415538531617772,113796709835547767, 9998149029974754104,952980844872975079232, 97930011125976327934826, 10791878598088498089377489, 1269466214540655412954317894] |