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| n | a(n) |
|---|---|
| -1 | 4 |
| 0 | 5 |
| 1 | 8 |
| 2 | 40 |
| 3 | 904 |
| 4 | 44104 |
| 5 | 5336104 |
| 6 | 901800904 |
| 7 | 260620460104 |
| 8 | 94083986096104 |
| 9 | 49770428644836904 |
| 10 | 41856930490307832904 |
| 11 | 40224510201185827416904 |
| 12 | 55067354465423397733736104 |
| 13 | 92568222856376731590410384104 |
[4,5,8,40,904,44104,5336104,901800904, 260620460104,94083986096104,49770428644836904, 41856930490307832904,40224510201185827416904, 55067354465423397733736104, 92568222856376731590410384104] |