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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 17 |
| 3 | 19748 |
| 4 | 4295531890 |
| 5 | 298024338096736401 |
| 6 | 10314425731041362057808006400 |
| 7 | 256923578002337121862310634348534055243302 |
| 8 | 6277101735598269851830651637045695165917698976435202316054 |
[1,1,17,19748,4295531890,298024338096736401, 10314425731041362057808006400, 256923578002337121862310634348534055243302, 62771017355982698518306516370456951659176989764352\ 02316054] |