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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 936 |
| 3 | 379366 |
| 4 | 249664758 |
| 5 | 221005209058 |
| 6 | 239143562020194 |
| 7 | 299233941746052998 |
| 8 | 417999868371999142276 |
| 9 | 636568066798406010872120 |
| 10 | 1039267652960081699025215774 |
| 11 | 1796704965351078502372895796786 |
| 12 | 3258764657213579008313421745034602 |
[1,6,936,379366,249664758,221005209058, 239143562020194,299233941746052998, 417999868371999142276,636568066798406010872120, 1039267652960081699025215774, 1796704965351078502372895796786, 3258764657213579008313421745034602] |