n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 35 |
3 | 105 |
4 | 1155 |
5 | 15015 |
6 | 15015 |
7 | 255255 |
8 | 4849845 |
9 | 4849845 |
10 | 111546435 |
11 | 557732175 |
12 | 1673196525 |
13 | 48522699225 |
14 | 1504203675975 |
15 | 1504203675975 |
16 | 1504203675975 |
17 | 55655536011075 |
18 | 55655536011075 |
19 | 2281876976454075 |
20 | 98120709987525225 |
[1,5,35,105,1155,15015,15015,255255,4849845, 4849845,111546435,557732175,1673196525, 48522699225,1504203675975,1504203675975, 1504203675975,55655536011075,55655536011075, 2281876976454075,98120709987525225] |