n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 30 |
5 | 94 |
6 | 316 |
7 | 1096 |
8 | 3856 |
9 | 13798 |
10 | 49940 |
11 | 182362 |
12 | 671092 |
13 | 2485534 |
14 | 9256396 |
15 | 34636834 |
16 | 130150588 |
17 | 490853416 |
18 | 1857283156 |
19 | 7048151672 |
20 | 26817356776 |
21 | 102280151422 |
22 | 390937468408 |
23 | 1497207322930 |
24 | 5744387279818 |
25 | 22076468764192 |
[1,2,4,10,30,94,316,1096,3856,13798,49940,182362, 671092,2485534,9256396,34636834,130150588, 490853416,1857283156,7048151672,26817356776, 102280151422,390937468408,1497207322930, 5744387279818,22076468764192] |