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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 9 |
| 6 | 1 |
| 7 | 1 |
| 8 | 18 |
| 9 | 18 |
| 10 | 1 |
| 11 | 1 |
| 12 | 30 |
| 13 | 180 |
| 14 | 30 |
| 15 | 1 |
| 16 | 1 |
| 17 | 45 |
| 18 | 450 |
| 19 | 450 |
| 20 | 45 |
| 21 | 1 |
| 22 | 1 |
| 23 | 63 |
| 24 | 945 |
| 25 | 4725 |
| 26 | 945 |
| 27 | 63 |
| 28 | 1 |
| 29 | 1 |
| 30 | 84 |
| 31 | 1764 |
| 32 | 13230 |
| 33 | 13230 |
| 34 | 1764 |
| 35 | 84 |
| 36 | 1 |
| 37 | 1 |
| 38 | 108 |
| 39 | 3024 |
| 40 | 31752 |
| 41 | 142884 |
| 42 | 31752 |
| 43 | 3024 |
| 44 | 108 |
| 45 | 1 |
| 46 | 1 |
| 47 | 135 |
| 48 | 4860 |
| 49 | 68040 |
| 50 | 428652 |
| 51 | 428652 |
| 52 | 68040 |
| 53 | 4860 |
| 54 | 135 |
| 55 | 1 |
[1,1,1,1,9,1,1,18,18,1,1,30,180,30,1,1,45,450,450, 45,1,1,63,945,4725,945,63,1,1,84,1764,13230,13230, 1764,84,1,1,108,3024,31752,142884,31752,3024,108, 1,1,135,4860,68040,428652,428652,68040,4860,135,1] |