n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 2 |
4 | 4 |
5 | 13 |
6 | 33 |
7 | 72 |
8 | 204 |
9 | 476 |
10 | 1348 |
11 | 3454 |
12 | 9511 |
13 | 25088 |
14 | 68579 |
15 | 186048 |
16 | 503538 |
17 | 1387536 |
18 | 3732666 |
19 | 10420102 |
[1,1,2,2,4,13,33,72,204,476,1348,3454,9511,25088, 68579,186048,503538,1387536,3732666,10420102] |