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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 1030 |
| 4 | 298764 |
| 5 | 83948008 |
| 6 | 22511356876 |
| 7 | 10087240306899 |
| 8 | 3527678938392395 |
| 9 | 1384849739444093464 |
| 10 | 509526476766763110063 |
| 11 | 197694082692466208850553 |
| 12 | 132949897804861666617140704 |
| 13 | 58944850608913545191419115404 |
[1,12,1030,298764,83948008,22511356876, 10087240306899,3527678938392395, 1384849739444093464,509526476766763110063, 197694082692466208850553, 132949897804861666617140704, 58944850608913545191419115404] |