| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 33 |
| 4 | 543 |
| 5 | 13857 |
| 6 | 504543 |
| 7 | 24897057 |
| 8 | 1600805343 |
| 9 | 130081089057 |
| 10 | 13038108350943 |
| 11 | 1580312813889057 |
| 12 | 227862219988670943 |
| 13 | 38547925823643969057 |
| 14 | 7561506530728353470943 |
| 15 | 1702450746193471070529057 |
[1,3,33,543,13857,504543,24897057,1600805343, 130081089057,13038108350943,1580312813889057, 227862219988670943,38547925823643969057, 7561506530728353470943,1702450746193471070529057] |