n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 945 |
6 | 10395 |
7 | 135135 |
8 | 2027025 |
9 | 34459425 |
10 | 654729075 |
11 | 4583103525 |
12 | 34788783519 |
13 | 286302699633 |
14 | 2541730502259 |
15 | 24202811629589 |
16 | 245427373661087 |
17 | 2620070906538825 |
18 | 28854865779691475 |
19 | 317259847008270825 |
20 | 3336850194636528659 |
21 | 32503486859882091945 |
[1,1,3,15,105,945,10395,135135,2027025,34459425, 654729075,4583103525,34788783519,286302699633, 2541730502259,24202811629589,245427373661087, 2620070906538825,28854865779691475, 317259847008270825,3336850194636528659, 32503486859882091945] |