n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 18 |
4 | 68 |
5 | 239 |
6 | 845 |
7 | 2958 |
8 | 10349 |
9 | 36111 |
10 | 126121 |
11 | 441161 |
12 | 1546353 |
13 | 5432430 |
14 | 19130949 |
15 | 67536934 |
16 | 238991556 |
17 | 847646318 |
18 | 3012890719 |
19 | 10730694626 |
20 | 38289978058 |
21 | 136865206035 |
22 | 489995352710 |
23 | 1756812943841 |
24 | 6307268945198 |
[1,5,18,68,239,845,2958,10349,36111,126121,441161, 1546353,5432430,19130949,67536934,238991556, 847646318,3012890719,10730694626,38289978058, 136865206035,489995352710,1756812943841, 6307268945198] |