n | a(n) |
---|---|
6 | 1 |
7 | 1 |
8 | 5 |
9 | 18 |
10 | 63 |
11 | 206 |
12 | 671 |
13 | 2087 |
14 | 6434 |
15 | 19472 |
16 | 58375 |
17 | 173316 |
18 | 511452 |
19 | 1500697 |
20 | 4386021 |
21 | 12775455 |
22 | 37118209 |
23 | 107621858 |
24 | 311552351 |
25 | 900775893 |
26 | 2601887149 |
27 | 7510011727 |
28 | 21664873773 |
29 | 62473966631 |
30 | 180104101037 |
31 | 519126161517 |
32 | 1496177366884 |
33 | 4312044894059 |
34 | 12427896986697 |
[1,1,5,18,63,206,671,2087,6434,19472,58375,173316, 511452,1500697,4386021,12775455,37118209, 107621858,311552351,900775893,2601887149, 7510011727,21664873773,62473966631,180104101037, 519126161517,1496177366884,4312044894059, 12427896986697] |