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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 58 |
| 4 | 1093 |
| 5 | 28731 |
| 6 | 971719 |
| 7 | 40236449 |
| 8 | 1972617385 |
| 9 | 111779567596 |
| 10 | 7189852342091 |
| 11 | 517600784497237 |
| 12 | 41237095369088029 |
| 13 | 3602389000897583001 |
| 14 | 342422738142493542031 |
| 15 | 35186740743134660359186 |
| 16 | 3887047020291801938191057 |
| 17 | 459397561144034558519708403 |
[1,1,5,58,1093,28731,971719,40236449,1972617385, 111779567596,7189852342091,517600784497237, 41237095369088029,3602389000897583001, 342422738142493542031,35186740743134660359186, 3887047020291801938191057, 459397561144034558519708403] |