n | a(n) |
---|---|
0 | 2 |
1 | 4 |
2 | 14 |
3 | 52 |
4 | 194 |
5 | 724 |
6 | 2702 |
7 | 10084 |
8 | 37634 |
9 | 140452 |
10 | 524174 |
11 | 1956244 |
12 | 7300802 |
13 | 27246964 |
14 | 101687054 |
15 | 379501252 |
16 | 1416317954 |
17 | 5285770564 |
18 | 19726764302 |
19 | 73621286644 |
20 | 274758382274 |
21 | 1025412242452 |
22 | 3826890587534 |
23 | 14282150107684 |
24 | 53301709843202 |
25 | 198924689265124 |
[2,4,14,52,194,724,2702,10084,37634,140452,524174, 1956244,7300802,27246964,101687054,379501252, 1416317954,5285770564,19726764302,73621286644, 274758382274,1025412242452,3826890587534, 14282150107684,53301709843202,198924689265124] |