n | a(n) |
---|---|
1 | 2 |
2 | 6 |
3 | 12 |
4 | 24 |
5 | 50 |
6 | 110 |
7 | 252 |
8 | 592 |
9 | 1410 |
10 | 3382 |
11 | 8140 |
12 | 19624 |
13 | 47346 |
14 | 114270 |
15 | 275836 |
16 | 665888 |
17 | 1607554 |
18 | 3880934 |
19 | 9369356 |
20 | 22619576 |
21 | 54608434 |
22 | 131836366 |
23 | 318281084 |
24 | 768398448 |
25 | 1855077890 |
26 | 4478554134 |
27 | 10812186060 |
28 | 26102926152 |
29 | 63018038258 |
[2,6,12,24,50,110,252,592,1410,3382,8140,19624, 47346,114270,275836,665888,1607554,3880934, 9369356,22619576,54608434,131836366,318281084, 768398448,1855077890,4478554134,10812186060, 26102926152,63018038258] |