n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 27 |
4 | 115 |
5 | 496 |
6 | 2203 |
7 | 9920 |
8 | 45411 |
9 | 209940 |
10 | 979623 |
11 | 4601579 |
12 | 21744703 |
13 | 103247146 |
14 | 492314131 |
15 | 2355900011 |
16 | 11309419723 |
17 | 54439264932 |
18 | 262687966031 |
19 | 1270289989275 |
20 | 6154650238423 |
21 | 29871399257282 |
22 | 145206884273859 |
23 | 706861991466206 |
24 | 3445426296696735 |
25 | 16813717974366998 |
26 | 82139970279742863 |
[1,2,7,27,115,496,2203,9920,45411,209940,979623, 4601579,21744703,103247146,492314131,2355900011, 11309419723,54439264932,262687966031, 1270289989275,6154650238423,29871399257282, 145206884273859,706861991466206,3445426296696735, 16813717974366998,82139970279742863] |