n | a(n) |
---|---|
6 | 1 |
7 | 3 |
8 | 13 |
9 | 41 |
10 | 141 |
11 | 440 |
12 | 1391 |
13 | 4244 |
14 | 12913 |
15 | 38651 |
16 | 115082 |
17 | 339646 |
18 | 997709 |
19 | 2915010 |
20 | 8485573 |
21 | 24612666 |
22 | 71191458 |
23 | 205393819 |
24 | 591330506 |
25 | 1699226719 |
26 | 4874925420 |
27 | 13965498369 |
28 | 39957144189 |
29 | 114193222891 |
30 | 326023307022 |
31 | 929958622555 |
32 | 2650483647976 |
33 | 7548608038736 |
[1,3,13,41,141,440,1391,4244,12913,38651,115082, 339646,997709,2915010,8485573,24612666,71191458, 205393819,591330506,1699226719,4874925420, 13965498369,39957144189,114193222891,326023307022, 929958622555,2650483647976,7548608038736] |