n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 1 |
4 | 5 |
5 | 15 |
6 | 71 |
7 | 341 |
8 | 1945 |
9 | 12135 |
10 | 84091 |
11 | 635281 |
12 | 5212085 |
13 | 46091955 |
14 | 437198711 |
15 | 4426839821 |
16 | 47657861425 |
17 | 543551916975 |
18 | 6546911178931 |
19 | 83039587809961 |
20 | 1106307936885965 |
21 | 15445529882517195 |
22 | 225502102290364751 |
23 | 3436240674908121701 |
24 | 54555087491802061705 |
[1,0,1,1,5,15,71,341,1945,12135,84091,635281, 5212085,46091955,437198711,4426839821,47657861425, 543551916975,6546911178931,83039587809961, 1106307936885965,15445529882517195, 225502102290364751,3436240674908121701, 54555087491802061705] |