n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 48 |
6 | 164 |
7 | 583 |
8 | 2142 |
9 | 8062 |
10 | 30950 |
11 | 120651 |
12 | 476418 |
13 | 1901311 |
14 | 7656763 |
15 | 31074151 |
16 | 126963466 |
17 | 521820340 |
18 | 2155911512 |
19 | 8948711597 |
20 | 37299355151 |
21 | 156054201936 |
22 | 655134261795 |
23 | 2758885471920 |
24 | 11651193009013 |
[1,1,2,5,15,48,164,583,2142,8062,30950,120651, 476418,1901311,7656763,31074151,126963466, 521820340,2155911512,8948711597,37299355151, 156054201936,655134261795,2758885471920, 11651193009013] |