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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 10 |
| 5 | 40 |
| 6 | 98 |
| 7 | 112 |
| 8 | 120 |
| 9 | 1904 |
| 10 | 2680 |
| 11 | 4040 |
| 12 | 4128 |
| 13 | 5136 |
| 14 | 9920 |
| 15 | 12224 |
| 16 | 17900 |
| 17 | 20880 |
| 18 | 27800 |
| 19 | 44160 |
| 20 | 55520 |
| 21 | 57121 |
| 22 | 62240 |
| 23 | 86866 |
| 24 | 158880 |
| 25 | 178120 |
| 26 | 1431808 |
| 27 | 1773920 |
| 28 | 1825280 |
| 29 | 1918640 |
| 30 | 3751328 |
| 31 | 5452288 |
| 32 | 6749600 |
| 33 | 7262120 |
| 34 | 7446720 |
| 35 | 9916832 |
| 36 | 17777440 |
| 37 | 46168000 |
| 38 | 101829808 |
[1,2,6,10,40,98,112,120,1904,2680,4040,4128,5136, 9920,12224,17900,20880,27800,44160,55520,57121, 62240,86866,158880,178120,1431808,1773920,1825280, 1918640,3751328,5452288,6749600,7262120,7446720, 9916832,17777440,46168000,101829808] |