n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 42 |
5 | 210 |
6 | 1056 |
7 | 5577 |
8 | 30030 |
9 | 165308 |
10 | 923780 |
11 | 5231954 |
12 | 29953728 |
13 | 173095700 |
14 | 1008263880 |
15 | 5913855450 |
16 | 34898020290 |
17 | 207042729630 |
18 | 1234218400800 |
19 | 7388927397390 |
20 | 44406274641300 |
21 | 267807758800920 |
22 | 1620247684628040 |
23 | 9831059348368050 |
24 | 59810275503119232 |
[0,1,2,10,42,210,1056,5577,30030,165308,923780, 5231954,29953728,173095700,1008263880,5913855450, 34898020290,207042729630,1234218400800, 7388927397390,44406274641300,267807758800920, 1620247684628040,9831059348368050, 59810275503119232] |