The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 70956 |
| 4 | 3330535424 |
| 5 | 761427167500000 |
| 6 | 582638218357483190016 |
| 7 | 1187008821625861701216334704 |
| 8 | 5506679118574470385180689045127168 |
| 9 | 51905786971852539256016172008925964546272 |
| 10 | 911575007335118525114451713722405610230204800000 |
| 11 | 27865918521652658229502411938764349911066494279853276416 |
[1,16,70956,3330535424,761427167500000, 582638218357483190016, 1187008821625861701216334704, 5506679118574470385180689045127168, 51905786971852539256016172008925964546272, 911575007335118525114451713722405610230204800000, 27865918521652658229502411938764349911066494279853\ 276416] |