n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 19 |
3 | 53 |
4 | 149 |
5 | 421 |
6 | 1193 |
7 | 3387 |
8 | 9627 |
9 | 27383 |
10 | 77923 |
11 | 221805 |
12 | 631469 |
13 | 1797957 |
14 | 5119593 |
15 | 14578387 |
16 | 41514003 |
17 | 118218823 |
18 | 336653331 |
19 | 958698053 |
20 | 2730124261 |
21 | 7774706437 |
22 | 22140438345 |
23 | 63050541515 |
24 | 179552587883 |
25 | 511322221559 |
[1,7,19,53,149,421,1193,3387,9627,27383,77923, 221805,631469,1797957,5119593,14578387,41514003, 118218823,336653331,958698053,2730124261, 7774706437,22140438345,63050541515,179552587883, 511322221559] |