n | a(n) |
---|---|
5 | 1 |
6 | 5 |
7 | 21 |
8 | 81 |
9 | 296 |
10 | 1043 |
11 | 3585 |
12 | 12095 |
13 | 40221 |
14 | 132225 |
15 | 430633 |
16 | 1391623 |
17 | 4467689 |
18 | 14262766 |
19 | 45311977 |
20 | 143343279 |
21 | 451768405 |
22 | 1419092951 |
23 | 4444424613 |
24 | 13882255419 |
25 | 43256925753 |
26 | 134492621659 |
27 | 417322590000 |
28 | 1292554593007 |
29 | 3996626787973 |
30 | 12338508959035 |
31 | 38037021764053 |
[1,5,21,81,296,1043,3585,12095,40221,132225, 430633,1391623,4467689,14262766,45311977, 143343279,451768405,1419092951,4444424613, 13882255419,43256925753,134492621659,417322590000, 1292554593007,3996626787973,12338508959035, 38037021764053] |