n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 15 |
4 | 51 |
5 | 187 |
6 | 719 |
7 | 2858 |
8 | 11650 |
9 | 48438 |
10 | 204630 |
11 | 875867 |
12 | 3790172 |
13 | 16554305 |
14 | 72883035 |
15 | 323109570 |
16 | 1441152303 |
17 | 6462494515 |
18 | 29118219850 |
19 | 131761291852 |
20 | 598529262016 |
21 | 2728346941040 |
22 | 12476533435028 |
23 | 57220220120080 |
24 | 263125059775970 |
25 | 1212942573227309 |
[1,2,5,15,51,187,719,2858,11650,48438,204630, 875867,3790172,16554305,72883035,323109570, 1441152303,6462494515,29118219850,131761291852, 598529262016,2728346941040,12476533435028, 57220220120080,263125059775970,1212942573227309] |