n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 13 |
5 | 75 |
6 | 525 |
7 | 4347 |
8 | 41245 |
9 | 441675 |
10 | 5259885 |
11 | 68958747 |
12 | 986533053 |
13 | 15292855019 |
14 | 255321427725 |
15 | 4567457001915 |
16 | 87156877087069 |
17 | 1767115200924299 |
18 | 37936303950503853 |
19 | 859663073472084315 |
20 | 20505904049009202685 |
21 | 513593410566661282347 |
22 | 13476082013068430626893 |
[1,1,3,13,75,525,4347,41245,441675,5259885, 68958747,986533053,15292855019,255321427725, 4567457001915,87156877087069,1767115200924299, 37936303950503853,859663073472084315, 20505904049009202685,513593410566661282347, 13476082013068430626893] |