n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 15 |
4 | 65 |
5 | 175 |
6 | 1155 |
7 | 7229 |
8 | 31081 |
9 | 162755 |
10 | 1018195 |
11 | 5448645 |
12 | 28879019 |
13 | 171229541 |
14 | 991796825 |
15 | 5540516759 |
16 | 32232757569 |
17 | 190448140543 |
18 | 1105001828111 |
19 | 6463178610505 |
20 | 38380301015595 |
21 | 227218808375165 |
22 | 1344777832158545 |
23 | 8022879439995215 |
24 | 47988823484272835 |
[1,1,1,15,65,175,1155,7229,31081,162755,1018195, 5448645,28879019,171229541,991796825,5540516759, 32232757569,190448140543,1105001828111, 6463178610505,38380301015595,227218808375165, 1344777832158545,8022879439995215, 47988823484272835] |