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| n | a(n) |
|---|---|
| 10 | 1 |
| 11 | 2146 |
| 12 | 754943 |
| 13 | 143336610 |
| 14 | 19795924787 |
| 15 | 2267392009178 |
| 16 | 231141766226605 |
| 17 | 21881366451890002 |
| 18 | 1976997422623843358 |
| 19 | 173666031731576614842 |
| 20 | 15025473411620865716938 |
| 21 | 1292364106829281911023554 |
| 22 | 111260031164008673095102874 |
| 23 | 9635674549219284395173044506 |
[1,2146,754943,143336610,19795924787, 2267392009178,231141766226605,21881366451890002, 1976997422623843358,173666031731576614842, 15025473411620865716938,1292364106829281911023554, 111260031164008673095102874, 9635674549219284395173044506] |