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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 12 |
| 5 | 10 |
| 6 | 60 |
| 7 | 105 |
| 8 | 140 |
| 9 | 63 |
| 10 | 280 |
| 11 | 1155 |
| 12 | 27720 |
| 13 | 25740 |
| 14 | 8008 |
| 15 | 9009 |
| 16 | 16380 |
| 17 | 17017 |
| 18 | 6126120 |
| 19 | 2909907 |
| 20 | 5542680 |
| 21 | 2645370 |
| 22 | 232792560 |
| 23 | 111546435 |
| 24 | 535422888 |
| 25 | 128707425 |
| 26 | 2974571600 |
| 27 | 717084225 |
| 28 | 80313433200 |
| 29 | 77636318760 |
| 30 | 2329089562800 |
| 31 | 4512611027925 |
| 32 | 546983154900 |
[1,1,2,3,12,10,60,105,140,63,280,1155,27720,25740, 8008,9009,16380,17017,6126120,2909907,5542680, 2645370,232792560,111546435,535422888,128707425, 2974571600,717084225,80313433200,77636318760, 2329089562800,4512611027925,546983154900] |