n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 5 |
6 | 15 |
7 | 35 |
8 | 140 |
9 | 1386 |
10 | 12810 |
11 | 92730 |
12 | 589545 |
13 | 4234945 |
14 | 41832791 |
15 | 483334215 |
16 | 5401798220 |
17 | 57262207380 |
18 | 626438655900 |
19 | 7740130412796 |
20 | 107197808258745 |
21 | 1546730804858085 |
22 | 22360919412385015 |
23 | 329241486278715395 |
24 | 5121840342205301946 |
[1,0,0,0,1,5,15,35,140,1386,12810,92730,589545, 4234945,41832791,483334215,5401798220,57262207380, 626438655900,7740130412796,107197808258745, 1546730804858085,22360919412385015, 329241486278715395,5121840342205301946] |