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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 12 |
| 3 | 93 |
| 4 | 1632 |
| 5 | 68457 |
| 6 | 7112055 |
| 7 | 1879090014 |
| 8 | 1287814075131 |
| 9 | 2325758241901161 |
| 10 | 11213788533232011006 |
| 11 | 145939965725683888932081 |
| 12 | 5174322925070232320838406581 |
| 13 | 503750821963423009552527526376232 |
[1,3,12,93,1632,68457,7112055,1879090014, 1287814075131,2325758241901161, 11213788533232011006,145939965725683888932081, 5174322925070232320838406581, 503750821963423009552527526376232] |