n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 9 |
6 | 25 |
7 | 39 |
8 | 84 |
9 | 158 |
10 | 381 |
11 | 610 |
12 | 2175 |
13 | 3489 |
14 | 7252 |
15 | 24744 |
16 | 54658 |
17 | 89031 |
18 | 273604 |
19 | 443746 |
20 | 1690517 |
21 | 5261990 |
22 | 9399018 |
23 | 15470605 |
24 | 58261863 |
25 | 102574465 |
[1,1,2,3,6,9,25,39,84,158,381,610,2175,3489,7252, 24744,54658,89031,273604,443746,1690517,5261990, 9399018,15470605,58261863,102574465] |