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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 3 |
| 6 | 16 |
| 7 | 15 |
| 8 | 6 |
| 9 | 1 |
| 10 | 30 |
| 11 | 135 |
| 12 | 222 |
| 13 | 205 |
| 14 | 120 |
| 15 | 45 |
| 16 | 10 |
| 17 | 1 |
| 18 | 15 |
| 19 | 330 |
| 20 | 1581 |
| 21 | 3760 |
| 22 | 5715 |
| 23 | 6165 |
| 24 | 4945 |
| 25 | 2997 |
| 26 | 1365 |
| 27 | 455 |
| 28 | 105 |
| 29 | 15 |
| 30 | 1 |
| 31 | 315 |
| 32 | 4410 |
| 33 | 23604 |
| 34 | 73755 |
| 35 | 159390 |
| 36 | 259105 |
| 37 | 331716 |
| 38 | 343161 |
| 39 | 290745 |
| 40 | 202755 |
| 41 | 116175 |
| 42 | 54257 |
| 43 | 20349 |
| 44 | 5985 |
| 45 | 1330 |
| 46 | 210 |
| 47 | 21 |
| 48 | 1 |
[1,1,3,1,3,16,15,6,1,30,135,222,205,120,45,10,1, 15,330,1581,3760,5715,6165,4945,2997,1365,455,105, 15,1,315,4410,23604,73755,159390,259105,331716, 343161,290745,202755,116175,54257,20349,5985,1330, 210,21,1] |