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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 168992 |
| 2 | 2037627900 |
| 3 | 3518648357632 |
| 4 | 1392671800456580 |
| 5 | 166774503916789696 |
| 6 | 7527949573364777296 |
[1,168992,2037627900,3518648357632, 1392671800456580,166774503916789696, 7527949573364777296] |