n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 10 |
4 | 70 |
5 | 42 |
6 | 462 |
7 | 858 |
8 | 858 |
9 | 4862 |
10 | 92378 |
11 | 8398 |
12 | 193154 |
13 | 74290 |
14 | 222870 |
15 | 6463230 |
16 | 200360130 |
17 | 11785890 |
18 | 11785890 |
19 | 22951470 |
20 | 22951470 |
21 | 941010270 |
22 | 40463441610 |
23 | 1759280070 |
24 | 82686163290 |
25 | 115760628606 |
26 | 115760628606 |
27 | 2045104438706 |
[2,6,10,70,42,462,858,858,4862,92378,8398,193154, 74290,222870,6463230,200360130,11785890,11785890, 22951470,22951470,941010270,40463441610, 1759280070,82686163290,115760628606,115760628606, 2045104438706] |