n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 48 |
4 | 165 |
5 | 586 |
6 | 2114 |
7 | 7694 |
8 | 28173 |
9 | 104370 |
10 | 389751 |
11 | 1463288 |
12 | 5514820 |
13 | 20894454 |
14 | 79510118 |
15 | 303570094 |
16 | 1161991698 |
17 | 4460728710 |
18 | 17168879077 |
19 | 66225380848 |
20 | 255907081225 |
21 | 990671100502 |
22 | 3841609763148 |
23 | 14919279265464 |
[1,4,14,48,165,586,2114,7694,28173,104370,389751, 1463288,5514820,20894454,79510118,303570094, 1161991698,4460728710,17168879077,66225380848, 255907081225,990671100502,3841609763148, 14919279265464] |