n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 50 |
4 | 416 |
5 | 4322 |
6 | 53888 |
7 | 783890 |
8 | 13031936 |
9 | 243733442 |
10 | 5064992768 |
11 | 115780447730 |
12 | 2887222009856 |
13 | 77998677862562 |
14 | 2269232452763648 |
15 | 70734934220015570 |
16 | 2351893466832306176 |
17 | 83086463910558199682 |
18 | 3107896091715557654528 |
19 | 122711086194279627711410 |
[1,2,8,50,416,4322,53888,783890,13031936, 243733442,5064992768,115780447730,2887222009856, 77998677862562,2269232452763648,70734934220015570, 2351893466832306176,83086463910558199682, 3107896091715557654528,122711086194279627711410] |