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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 1 |
| 3 | 4 |
| 4 | 6 |
| 5 | 40 |
| 6 | 20 |
| 7 | 46 |
| 8 | 8 |
| 9 | 42 |
| 10 | 400 |
| 11 | 60 |
| 12 | 62 |
| 13 | 64 |
| 14 | 26 |
| 15 | 406 |
| 16 | 80 |
| 17 | 48 |
| 18 | 4000 |
[2,1,4,6,40,20,46,8,42,400,60,62,64,26,406,80,48, 4000] |