The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 3 | 40 |
| 4 | 1625 |
| 5 | 151776 |
| 6 | 27316471 |
| 7 | 8429601664 |
| 8 | 4108830350625 |
| 9 | 2977546171600000 |
| 10 | 3062351613203813051 |
| 11 | 4308809606735976861696 |
| 12 | 8050856986181775515023417 |
| 13 | 19490752185922086291273856000 |
| 14 | 59888297825402713913058605859375 |
| 15 | 229474927848540723655596345639141376 |
[40,1625,151776,27316471,8429601664,4108830350625, 2977546171600000,3062351613203813051, 4308809606735976861696,8050856986181775515023417, 19490752185922086291273856000, 59888297825402713913058605859375, 229474927848540723655596345639141376] |