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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 15 |
| 3 | 1 |
| 4 | 330 |
| 5 | 30 |
| 6 | 1 |
| 7 | 8415 |
| 8 | 885 |
| 9 | 45 |
| 10 | 1 |
| 11 | 232254 |
| 12 | 26730 |
| 13 | 1665 |
| 14 | 60 |
| 15 | 1 |
| 16 | 6735366 |
| 17 | 825858 |
| 18 | 58320 |
| 19 | 2670 |
| 20 | 75 |
| 21 | 1 |
| 22 | 202060980 |
| 23 | 25992252 |
| 24 | 2003562 |
| 25 | 106560 |
| 26 | 3900 |
| 27 | 90 |
| 28 | 1 |
| 29 | 6213375135 |
| 30 | 830282805 |
| 31 | 68351283 |
| 32 | 4038741 |
| 33 | 174825 |
| 34 | 5355 |
| 35 | 105 |
| 36 | 1 |
| 37 | 194685754230 |
[1,15,1,330,30,1,8415,885,45,1,232254,26730,1665, 60,1,6735366,825858,58320,2670,75,1,202060980, 25992252,2003562,106560,3900,90,1,6213375135, 830282805,68351283,4038741,174825,5355,105,1, 194685754230] |