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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 1 |
| 4 | 55 |
| 5 | 15 |
| 6 | 1 |
| 7 | 935 |
| 8 | 220 |
| 9 | 75 |
| 10 | 30 |
| 11 | 1 |
| 12 | 21505 |
| 13 | 4675 |
| 14 | 2750 |
| 15 | 550 |
| 16 | 375 |
| 17 | 50 |
| 18 | 1 |
| 19 | 623645 |
| 20 | 129030 |
| 21 | 70125 |
| 22 | 30250 |
| 23 | 14025 |
| 24 | 16500 |
| 25 | 1875 |
| 26 | 1100 |
| 27 | 1125 |
| 28 | 75 |
| 29 | 1 |
| 30 | 21827575 |
| 31 | 4365515 |
| 32 | 2258025 |
| 33 | 1799875 |
| 34 | 451605 |
| 35 | 490875 |
| 36 | 211750 |
| 37 | 144375 |
| 38 | 32725 |
| 39 | 57750 |
| 40 | 13125 |
| 41 | 1925 |
| 42 | 2625 |
| 43 | 105 |
| 44 | 1 |
| 45 | 894930575 |
[1,5,1,55,15,1,935,220,75,30,1,21505,4675,2750, 550,375,50,1,623645,129030,70125,30250,14025, 16500,1875,1100,1125,75,1,21827575,4365515, 2258025,1799875,451605,490875,211750,144375,32725, 57750,13125,1925,2625,105,1,894930575] |