n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 315 |
6 | 3465 |
7 | 45045 |
8 | 18018 |
9 | 153153 |
10 | 14549535 |
11 | 14549535 |
12 | 334639305 |
13 | 1673196525 |
14 | 5019589575 |
15 | 145568097675 |
16 | 18050444111700 |
17 | 265447707525 |
18 | 265447707525 |
19 | 9821565178425 |
20 | 9821565178425 |
21 | 57526310330775 |
[1,3,15,105,315,3465,45045,18018,153153,14549535, 14549535,334639305,1673196525,5019589575, 145568097675,18050444111700,265447707525, 265447707525,9821565178425,9821565178425, 57526310330775] |