n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 55 |
6 | 232 |
7 | 1161 |
8 | 6643 |
9 | 44566 |
10 | 327064 |
11 | 2709050 |
12 | 24312028 |
13 | 240833770 |
14 | 2546215687 |
15 | 29251369570 |
16 | 355838858402 |
17 | 4658866773664 |
[1,1,2,5,15,55,232,1161,6643,44566,327064,2709050, 24312028,240833770,2546215687,29251369570, 355838858402,4658866773664] |