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| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 12 |
| 4 | 66 |
| 5 | 36 |
| 6 | 576 |
| 7 | 1168 |
| 8 | 80 |
| 9 | 2610 |
| 10 | 17376 |
| 11 | 16220 |
| 12 | 150 |
| 13 | 8520 |
| 14 | 129800 |
| 15 | 448800 |
| 16 | 202416 |
| 17 | 252 |
| 18 | 22680 |
| 19 | 659560 |
| 20 | 5748750 |
| 21 | 10861056 |
| 22 | 2395540 |
| 23 | 392 |
| 24 | 52416 |
| 25 | 2596608 |
| 26 | 46412200 |
| 27 | 241987500 |
| 28 | 253940736 |
| 29 | 27517568 |
| 30 | 576 |
| 31 | 109116 |
| 32 | 8505728 |
| 33 | 273322980 |
| 34 | 3121135440 |
| 35 | 9885006250 |
| 36 | 5807161344 |
| 37 | 310123764 |
[2,12,66,36,576,1168,80,2610,17376,16220,150,8520, 129800,448800,202416,252,22680,659560,5748750, 10861056,2395540,392,52416,2596608,46412200, 241987500,253940736,27517568,576,109116,8505728, 273322980,3121135440,9885006250,5807161344, 310123764] |