n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 22 |
4 | 71 |
5 | 226 |
6 | 717 |
7 | 2262 |
8 | 7107 |
9 | 22246 |
10 | 69413 |
11 | 215986 |
12 | 670441 |
13 | 2076686 |
14 | 6420403 |
15 | 19816362 |
16 | 61070499 |
17 | 187953174 |
18 | 577742469 |
19 | 1773918642 |
20 | 5441141589 |
21 | 16674016758 |
22 | 51052484343 |
23 | 156188410098 |
24 | 477487110429 |
25 | 1458741494826 |
[1,2,7,22,71,226,717,2262,7107,22246,69413,215986, 670441,2076686,6420403,19816362,61070499, 187953174,577742469,1773918642,5441141589, 16674016758,51052484343,156188410098,477487110429, 1458741494826] |