n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 9 |
6 | 23 |
7 | 62 |
8 | 174 |
9 | 497 |
10 | 1433 |
11 | 4150 |
12 | 12044 |
13 | 34989 |
14 | 101695 |
15 | 295642 |
16 | 859566 |
17 | 2499277 |
18 | 7267081 |
19 | 21130538 |
20 | 61441732 |
21 | 178655937 |
22 | 519483767 |
23 | 1510520966 |
24 | 4392195390 |
25 | 12771343961 |
26 | 37135696841 |
[1,1,2,4,9,23,62,174,497,1433,4150,12044,34989, 101695,295642,859566,2499277,7267081,21130538, 61441732,178655937,519483767,1510520966, 4392195390,12771343961,37135696841] |