| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 10 |
| 2 | 378 |
| 3 | 40506 |
| 4 | 8553330 |
| 5 | 2993345546 |
| 6 | 1566852695978 |
| 7 | 1146277553440826 |
| 8 | 1116896678593105890 |
| 9 | 1398153036485073410442 |
| 10 | 2186625537999184822244826 |
| 11 | 4178049614593046484845430458 |
[2,10,378,40506,8553330,2993345546,1566852695978, 1146277553440826,1116896678593105890, 1398153036485073410442,2186625537999184822244826, 4178049614593046484845430458] |