n | a(n) |
---|---|
1 | 5 |
2 | 21 |
3 | 142 |
4 | 840 |
5 | 4282 |
6 | 18460 |
7 | 116615 |
8 | 703919 |
9 | 3657355 |
10 | 16159899 |
11 | 95479298 |
12 | 588467880 |
13 | 3115779158 |
14 | 14092223060 |
15 | 77925646825 |
16 | 490757504161 |
17 | 2647731283685 |
18 | 12245345216181 |
19 | 63384393297262 |
20 | 408260456356200 |
21 | 2244457157941402 |
22 | 10605018345084220 |
[5,21,142,840,4282,18460,116615,703919,3657355, 16159899,95479298,588467880,3115779158, 14092223060,77925646825,490757504161, 2647731283685,12245345216181,63384393297262, 408260456356200,2244457157941402, 10605018345084220] |