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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 52 |
| 2 | 6995 |
| 3 | 937776 |
| 4 | 107652681 |
| 5 | 10781201973 |
| 6 | 958919976957 |
| 7 | 76861542428397 |
| 8 | 5620227129073491 |
| 9 | 378709513816248475 |
| 10 | 23713852762539359688 |
| 11 | 1389561695379881634055 |
| 12 | 76647024053735036288641 |
| 13 | 3999799865715906390697377 |
| 14 | 198328846122797866982616805 |
| 15 | 9379277765981012067789260214 |
[1,52,6995,937776,107652681,10781201973, 958919976957,76861542428397,5620227129073491, 378709513816248475,23713852762539359688, 1389561695379881634055,76647024053735036288641, 3999799865715906390697377, 198328846122797866982616805, 9379277765981012067789260214] |