n | a(n) |
---|---|
1 | 4 |
2 | 14 |
3 | 37 |
4 | 105 |
5 | 388 |
6 | 1280 |
7 | 4121 |
8 | 13933 |
9 | 46641 |
10 | 154593 |
11 | 516270 |
12 | 1725502 |
13 | 5753200 |
14 | 19197252 |
15 | 64095188 |
16 | 213911810 |
17 | 713904833 |
18 | 2382943651 |
19 | 7953695202 |
20 | 26546786860 |
21 | 88606850547 |
22 | 295748963969 |
23 | 987132925969 |
24 | 3294803783913 |
25 | 10997255560702 |
[4,14,37,105,388,1280,4121,13933,46641,154593, 516270,1725502,5753200,19197252,64095188, 213911810,713904833,2382943651,7953695202, 26546786860,88606850547,295748963969,987132925969, 3294803783913,10997255560702] |