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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 17 |
| 4 | 888 |
| 5 | 1882581 |
| 6 | 274390124129 |
| 7 | 3265588702832507993 |
| 8 | 4299566944915974710190397764 |
| 9 | 828675148077869385766758257425030178834 |
| 10 | 30068353582978500344223495096836001731261047276252951 |
| 11 | 257277650306758464761197063911448586633222894357360550424924677512839 |
[1,1,3,17,888,1882581,274390124129, 3265588702832507993,4299566944915974710190397764, 828675148077869385766758257425030178834, 30068353582978500344223495096836001731261047276252\ 951, 25727765030675846476119706391144858663322289435736\ 0550424924677512839] |