n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 62 |
6 | 312 |
7 | 2001 |
8 | 16796 |
9 | 183416 |
10 | 2634814 |
11 | 49703026 |
12 | 1240433524 |
13 | 40975503423 |
14 | 1803618092422 |
15 | 105967390883387 |
16 | 8362303039735026 |
17 | 888404336012975536 |
18 | 127771790716640691664 |
19 | 24942884185805223709166 |
[1,1,2,5,16,62,312,2001,16796,183416,2634814, 49703026,1240433524,40975503423,1803618092422, 105967390883387,8362303039735026, 888404336012975536,127771790716640691664, 24942884185805223709166] |