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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 39 |
| 4 | 15 |
| 5 | 175 |
| 6 | 63 |
| 7 | 1275 |
| 8 | 255 |
| 9 | 1215 |
| 10 | 891 |
| 11 | 495 |
| 12 | 6975 |
| 13 | 14175 |
| 14 | 26367 |
| 15 | 13311 |
| 16 | 8127 |
| 17 | 20475 |
| 18 | 42735 |
| 19 | 95931 |
| 20 | 69615 |
| 21 | 36855 |
| 22 | 24255 |
| 23 | 404415 |
| 24 | 4095 |
| 25 | 96255 |
| 26 | 423423 |
| 27 | 253935 |
| 28 | 98175 |
| 29 | 913275 |
| 30 | 165375 |
| 31 | 507375 |
| 32 | 130815 |
| 33 | 3198975 |
| 34 | 1576575 |
| 35 | 203775 |
| 36 | 2154495 |
| 37 | 4398975 |
| 38 | 1616895 |
| 39 | 1556415 |
[1,3,39,15,175,63,1275,255,1215,891,495,6975, 14175,26367,13311,8127,20475,42735,95931,69615, 36855,24255,404415,4095,96255,423423,253935,98175, 913275,165375,507375,130815,3198975,1576575, 203775,2154495,4398975,1616895,1556415] |