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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1806 |
| 2 | 816312 |
| 3 | 164532018 |
| 4 | 18756445974 |
| 5 | 1378914676482 |
| 6 | 71082376011528 |
| 7 | 2723637332300766 |
| 8 | 80988226799441304 |
| 9 | 1932071264207861042 |
| 10 | 37971330014459062872 |
| 11 | 628214795343835069230 |
| 12 | 8908241443491168857610 |
[1,1806,816312,164532018,18756445974, 1378914676482,71082376011528,2723637332300766, 80988226799441304,1932071264207861042, 37971330014459062872,628214795343835069230, 8908241443491168857610] |