n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 19 |
5 | 51 |
6 | 141 |
7 | 393 |
8 | 1107 |
9 | 3139 |
10 | 8953 |
11 | 25653 |
12 | 73789 |
13 | 212941 |
14 | 616227 |
15 | 1787607 |
16 | 5196627 |
17 | 15134931 |
18 | 44152809 |
19 | 128996853 |
20 | 377379369 |
21 | 1105350729 |
22 | 3241135527 |
23 | 9513228123 |
24 | 27948336381 |
25 | 82176836301 |
26 | 241813226151 |
27 | 712070156203 |
28 | 2098240353907 |
29 | 6186675630819 |
[1,1,3,7,19,51,141,393,1107,3139,8953,25653,73789, 212941,616227,1787607,5196627,15134931,44152809, 128996853,377379369,1105350729,3241135527, 9513228123,27948336381,82176836301,241813226151, 712070156203,2098240353907,6186675630819] |