n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 2 |
4 | 5 |
5 | 14 |
6 | 42 |
7 | 6 |
8 | 429 |
9 | 1430 |
10 | 4862 |
11 | 16796 |
12 | 58786 |
13 | 2261 |
14 | 742900 |
15 | 2674440 |
16 | 66861 |
17 | 35357670 |
18 | 129644790 |
19 | 2274470 |
20 | 1767263190 |
21 | 25246617 |
22 | 24466267020 |
23 | 91482563640 |
24 | 343059613650 |
25 | 1289904147324 |
26 | 4861946401452 |
27 | 18367353072152 |
28 | 69533550916004 |
[1,3,2,5,14,42,6,429,1430,4862,16796,58786,2261, 742900,2674440,66861,35357670,129644790,2274470, 1767263190,25246617,24466267020,91482563640, 343059613650,1289904147324,4861946401452, 18367353072152,69533550916004] |