n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 6 |
5 | 30 |
6 | 10 |
7 | 70 |
8 | 70 |
9 | 210 |
10 | 42 |
11 | 462 |
12 | 462 |
13 | 6006 |
14 | 858 |
15 | 4290 |
16 | 4290 |
17 | 72930 |
18 | 24310 |
19 | 461890 |
20 | 92378 |
21 | 1939938 |
22 | 176358 |
23 | 4056234 |
24 | 1352078 |
25 | 6760390 |
26 | 520030 |
27 | 1560090 |
28 | 222870 |
29 | 6463230 |
30 | 6463230 |
31 | 200360130 |
[1,1,2,6,6,30,10,70,70,210,42,462,462,6006,858, 4290,4290,72930,24310,461890,92378,1939938,176358, 4056234,1352078,6760390,520030,1560090,222870, 6463230,6463230,200360130] |