n | a(n) |
---|---|
1 | 4 |
2 | 13 |
3 | 41 |
4 | 131 |
5 | 419 |
6 | 1339 |
7 | 4279 |
8 | 13675 |
9 | 43703 |
10 | 139667 |
11 | 446351 |
12 | 1426459 |
13 | 4558711 |
14 | 14568835 |
15 | 46559423 |
16 | 148795691 |
17 | 475524743 |
18 | 1519693075 |
19 | 4856670607 |
20 | 15521061307 |
21 | 49602570071 |
22 | 158521051427 |
23 | 506605276895 |
24 | 1619020970827 |
25 | 5174105015335 |
[4,13,41,131,419,1339,4279,13675,43703,139667, 446351,1426459,4558711,14568835,46559423, 148795691,475524743,1519693075,4856670607, 15521061307,49602570071,158521051427,506605276895, 1619020970827,5174105015335] |