n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 31 |
4 | 119 |
5 | 455 |
6 | 1799 |
7 | 7175 |
8 | 28679 |
9 | 114695 |
10 | 458759 |
11 | 1835015 |
12 | 7340039 |
13 | 29360135 |
14 | 117440519 |
15 | 469762055 |
16 | 1879048199 |
17 | 7516192775 |
18 | 30064771079 |
19 | 120259084295 |
20 | 481036337159 |
21 | 1924145348615 |
22 | 7696581394439 |
23 | 30786325577735 |
24 | 123145302310919 |
25 | 492581209243655 |
[1,7,31,119,455,1799,7175,28679,114695,458759, 1835015,7340039,29360135,117440519,469762055, 1879048199,7516192775,30064771079,120259084295, 481036337159,1924145348615,7696581394439, 30786325577735,123145302310919,492581209243655] |