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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 2 |
| 4 | 12 |
| 5 | 4 |
| 6 | 32 |
| 7 | 6 |
| 8 | 54 |
| 9 | 7 |
| 10 | 70 |
| 11 | 6 |
| 12 | 72 |
| 13 | 5 |
| 14 | 70 |
| 15 | 4 |
| 16 | 60 |
| 17 | 3 |
| 18 | 48 |
| 19 | 2 |
| 20 | 36 |
| 21 | 1 |
| 22 | 20 |
[1,4,2,12,4,32,6,54,7,70,6,72,5,70,4,60,3,48,2,36, 1,20] |