| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 36 |
| 3 | 396 |
| 4 | 30096 |
| 5 | 4093056 |
| 6 | 2799650304 |
| 7 | 1299037741056 |
| 8 | 1293841590091776 |
| 9 | 2059795811426107392 |
| 10 | 2412020895179971756032 |
| 11 | 2402372811599251869007872 |
| 12 | 11625082035328779794129092608 |
| 13 | 93744661532891280259857002790912 |
[6,36,396,30096,4093056,2799650304,1299037741056, 1293841590091776,2059795811426107392, 2412020895179971756032,2402372811599251869007872, 11625082035328779794129092608, 93744661532891280259857002790912] |