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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 9 |
| 5 | 10 |
| 6 | 115544 |
| 7 | 13568075 |
| 8 | 13568077 |
| 9 | 13568078 |
| 10 | 13568083 |
| 11 | 13568085 |
| 12 | 13568086 |
[0,1,2,9,10,115544,13568075,13568077,13568078, 13568083,13568085,13568086] |