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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 6 |
| 7 | 1 |
| 8 | 4 |
| 9 | 15 |
| 10 | 22 |
| 11 | 1 |
| 12 | 5 |
| 13 | 28 |
| 14 | 95 |
| 15 | 91 |
| 16 | 1 |
| 17 | 6 |
| 18 | 45 |
| 19 | 252 |
| 20 | 690 |
| 21 | 408 |
| 22 | 1 |
| 23 | 7 |
| 24 | 66 |
| 25 | 525 |
| 26 | 2618 |
| 27 | 5481 |
| 28 | 1938 |
| 29 | 1 |
| 30 | 8 |
| 31 | 91 |
| 32 | 946 |
| 33 | 7095 |
| 34 | 29848 |
| 35 | 46376 |
| 36 | 9614 |
| 37 | 1 |
| 38 | 9 |
| 39 | 120 |
| 40 | 1547 |
| 41 | 15741 |
| 42 | 105417 |
| 43 | 363216 |
| 44 | 411255 |
| 45 | 49335 |
| 46 | 1 |
| 47 | 10 |
| 48 | 153 |
| 49 | 2360 |
| 50 | 30576 |
| 51 | 288288 |
| 52 | 1673535 |
| 53 | 4638348 |
| 54 | 3781635 |
| 55 | 260130 |
[1,1,2,1,3,6,1,4,15,22,1,5,28,95,91,1,6,45,252, 690,408,1,7,66,525,2618,5481,1938,1,8,91,946,7095, 29848,46376,9614,1,9,120,1547,15741,105417,363216, 411255,49335,1,10,153,2360,30576,288288,1673535, 4638348,3781635,260130] |