n | a(n) |
---|---|
0 | -1 |
1 | 2 |
2 | 3 |
3 | 10 |
4 | 43 |
5 | 210 |
6 | 1106 |
7 | 6120 |
8 | 35059 |
9 | 206050 |
10 | 1235130 |
11 | 7520860 |
12 | 46385822 |
13 | 289160620 |
14 | 1818956184 |
15 | 11531388580 |
16 | 73599630147 |
17 | 472547337650 |
18 | 3049962382850 |
19 | 19777692906300 |
20 | 128789274380746 |
21 | 841837751136060 |
22 | 5521644155232972 |
23 | 36330127521846080 |
24 | 239722100410099118 |
[-1,2,3,10,43,210,1106,6120,35059,206050,1235130, 7520860,46385822,289160620,1818956184,11531388580, 73599630147,472547337650,3049962382850, 19777692906300,128789274380746,841837751136060, 5521644155232972,36330127521846080, 239722100410099118] |