n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 2 |
4 | 5 |
5 | 6 |
6 | 14 |
7 | 20 |
8 | 45 |
9 | 70 |
10 | 154 |
11 | 252 |
12 | 546 |
13 | 924 |
14 | 1980 |
15 | 3432 |
16 | 7293 |
17 | 12870 |
18 | 27170 |
19 | 48620 |
20 | 102102 |
21 | 184756 |
22 | 386308 |
23 | 705432 |
24 | 1469650 |
25 | 2704156 |
26 | 5616324 |
27 | 10400600 |
28 | 21544100 |
29 | 40116600 |
30 | 82907640 |
31 | 155117520 |
32 | 319929885 |
33 | 601080390 |
34 | 1237518450 |
[1,1,3,2,5,6,14,20,45,70,154,252,546,924,1980, 3432,7293,12870,27170,48620,102102,184756,386308, 705432,1469650,2704156,5616324,10400600,21544100, 40116600,82907640,155117520,319929885,601080390, 1237518450] |