n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 1 |
5 | 15 |
6 | 45 |
7 | 21 |
8 | 315 |
9 | 2835 |
10 | 4725 |
11 | 22275 |
12 | 93555 |
13 | 2027025 |
14 | 42567525 |
15 | 638512875 |
16 | 212837625 |
17 | 2170943775 |
18 | 13956067125 |
19 | 618718975875 |
20 | 9280784638125 |
21 | 14992036723125 |
22 | 7522320180375 |
23 | 49308808782358125 |
24 | 147926426347074375 |
[1,1,1,3,1,15,45,21,315,2835,4725,22275,93555, 2027025,42567525,638512875,212837625,2170943775, 13956067125,618718975875,9280784638125, 14992036723125,7522320180375,49308808782358125, 147926426347074375] |