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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 6 |
| 5 | 6 |
| 6 | 1 |
| 7 | 18 |
| 8 | 96 |
| 9 | 96 |
| 10 | 1 |
| 11 | 40 |
| 12 | 576 |
| 13 | 2976 |
| 14 | 2976 |
| 15 | 1 |
| 16 | 75 |
| 17 | 2226 |
| 18 | 29688 |
| 19 | 151416 |
| 20 | 151416 |
| 21 | 1 |
| 22 | 126 |
| 23 | 6636 |
| 24 | 175680 |
| 25 | 2259576 |
| 26 | 11449296 |
| 27 | 11449296 |
| 28 | 1 |
| 29 | 196 |
| 30 | 16632 |
| 31 | 757800 |
| 32 | 18931176 |
| 33 | 238623408 |
| 34 | 1204566336 |
| 35 | 1204566336 |
[1,1,1,1,6,6,1,18,96,96,1,40,576,2976,2976,1,75, 2226,29688,151416,151416,1,126,6636,175680, 2259576,11449296,11449296,1,196,16632,757800, 18931176,238623408,1204566336,1204566336] |