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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 9 |
| 3 | 73 |
| 4 | 1212 |
| 5 | 44667 |
| 6 | 3251186 |
| 7 | 345094227 |
| 8 | 39552733796 |
| 9 | 4234657495267 |
| 10 | 409948262617398 |
| 11 | 36190736880911571 |
| 12 | 2964860272283578040 |
| 13 | 229165985114590010307 |
| 14 | 16940021231116707830570 |
[1,2,9,73,1212,44667,3251186,345094227, 39552733796,4234657495267,409948262617398, 36190736880911571,2964860272283578040, 229165985114590010307,16940021231116707830570] |