n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 20 |
6 | 67 |
7 | 254 |
8 | 1057 |
9 | 4700 |
10 | 21847 |
11 | 104474 |
12 | 508477 |
13 | 2501480 |
14 | 12386227 |
15 | 61570694 |
16 | 306778297 |
17 | 1530678260 |
18 | 7643776207 |
19 | 38190084914 |
20 | 190864134517 |
21 | 954061999040 |
22 | 4769534367787 |
23 | 23845345743134 |
24 | 119219752001137 |
[1,2,3,7,20,67,254,1057,4700,21847,104474,508477, 2501480,12386227,61570694,306778297,1530678260, 7643776207,38190084914,190864134517,954061999040, 4769534367787,23845345743134,119219752001137] |