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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 91 |
| 4 | 1795 |
| 5 | 47851 |
| 6 | 1612027 |
| 7 | 65731891 |
| 8 | 3148530595 |
| 9 | 173319612571 |
| 10 | 10782796483147 |
| 11 | 748237171338691 |
| 12 | 57299882326956595 |
| 13 | 4800323120225595691 |
| 14 | 436719009263680421467 |
| 15 | 42878536726317406241491 |
| 16 | 4519124182661042439577795 |
| 17 | 508885588456024192452993211 |
[1,1,7,91,1795,47851,1612027,65731891,3148530595, 173319612571,10782796483147,748237171338691, 57299882326956595,4800323120225595691, 436719009263680421467,42878536726317406241491, 4519124182661042439577795, 508885588456024192452993211] |