n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 51 |
6 | 196 |
7 | 827 |
8 | 3795 |
9 | 18755 |
10 | 99146 |
11 | 556711 |
12 | 3305017 |
13 | 20655285 |
14 | 135399720 |
15 | 927973061 |
16 | 6631556521 |
17 | 49294051497 |
18 | 380306658250 |
19 | 3039453750685 |
20 | 25120541332271 |
21 | 214363100120051 |
22 | 1885987611214092 |
23 | 17085579637664715 |
24 | 159185637725413675 |
[1,1,2,5,15,51,196,827,3795,18755,99146,556711, 3305017,20655285,135399720,927973061,6631556521, 49294051497,380306658250,3039453750685, 25120541332271,214363100120051,1885987611214092, 17085579637664715,159185637725413675] |