n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 945 |
6 | 10395 |
7 | 135135 |
8 | 2027025 |
9 | 11486475 |
10 | 72025173 |
11 | 497809599 |
12 | 3759823201 |
13 | 30676852011 |
14 | 265149012989 |
15 | 2341915514787 |
16 | 19966886272757 |
17 | 154807536575931 |
18 | 1184739742163293 |
19 | 9169888620679203 |
20 | 72323378114077925 |
21 | 580752883543676927 |
22 | 4717664674505952353 |
[1,1,3,15,105,945,10395,135135,2027025,11486475, 72025173,497809599,3759823201,30676852011, 265149012989,2341915514787,19966886272757, 154807536575931,1184739742163293,9169888620679203, 72323378114077925,580752883543676927, 4717664674505952353] |