n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 19 |
5 | 51 |
6 | 143 |
7 | 407 |
8 | 1183 |
9 | 3487 |
10 | 10415 |
11 | 31439 |
12 | 95791 |
13 | 294191 |
14 | 909823 |
15 | 2830943 |
16 | 8856255 |
17 | 27839167 |
18 | 87888767 |
19 | 278545663 |
20 | 885903743 |
21 | 2826612095 |
22 | 9045147391 |
23 | 29022168063 |
24 | 93350430975 |
25 | 300949170431 |
26 | 972271227647 |
[1,1,3,7,19,51,143,407,1183,3487,10415,31439, 95791,294191,909823,2830943,8856255,27839167, 87888767,278545663,885903743,2826612095, 9045147391,29022168063,93350430975,300949170431, 972271227647] |