n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 15 |
4 | 105 |
5 | 315 |
6 | 1141 |
7 | 4779 |
8 | 21101 |
9 | 80559 |
10 | 314185 |
11 | 1267551 |
12 | 5160933 |
13 | 20504123 |
14 | 81554685 |
15 | 326682775 |
16 | 1310978305 |
17 | 5239019143 |
18 | 20931551661 |
19 | 83743554723 |
20 | 335175239813 |
21 | 1340542340399 |
22 | 5360923216953 |
23 | 21444223178271 |
24 | 85786427569333 |
25 | 343141430067947 |
[1,1,3,15,105,315,1141,4779,21101,80559,314185, 1267551,5160933,20504123,81554685,326682775, 1310978305,5239019143,20931551661,83743554723, 335175239813,1340542340399,5360923216953, 21444223178271,85786427569333,343141430067947] |