n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 45 |
5 | 75 |
6 | 175 |
7 | 1225 |
8 | 11025 |
9 | 19845 |
10 | 43659 |
11 | 160083 |
12 | 693693 |
13 | 1288287 |
14 | 2760615 |
15 | 41409225 |
16 | 703956825 |
17 | 1329696225 |
18 | 2807136475 |
19 | 10667118605 |
20 | 44801898141 |
21 | 85530896451 |
22 | 178837328943 |
23 | 1371086188563 |
24 | 11425718238025 |
[1,1,3,9,45,75,175,1225,11025,19845,43659,160083, 693693,1288287,2760615,41409225,703956825, 1329696225,2807136475,10667118605,44801898141, 85530896451,178837328943,1371086188563, 11425718238025] |