n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 30 |
4 | 130 |
5 | 536 |
6 | 2174 |
7 | 8746 |
8 | 35070 |
9 | 140438 |
10 | 562008 |
11 | 2248460 |
12 | 8994530 |
13 | 35979160 |
14 | 143917970 |
15 | 575673270 |
16 | 2302692898 |
17 | 9210765608 |
[2,6,30,130,536,2174,8746,35070,140438,562008, 2248460,8994530,35979160,143917970,575673270, 2302692898,9210765608] |