n | a(n) |
---|---|
0 | 4 |
1 | 13 |
2 | 42 |
3 | 135 |
4 | 433 |
5 | 1388 |
6 | 4449 |
7 | 14260 |
8 | 45706 |
9 | 146496 |
10 | 469546 |
11 | 1504979 |
12 | 4823727 |
13 | 15460908 |
14 | 49554976 |
15 | 158832563 |
16 | 509086778 |
17 | 1631714194 |
18 | 5229935889 |
19 | 16762880107 |
20 | 53728029453 |
21 | 172207945799 |
22 | 551957272549 |
23 | 1769121798104 |
24 | 5670351840955 |
25 | 18174492018967 |
[4,13,42,135,433,1388,4449,14260,45706,146496, 469546,1504979,4823727,15460908,49554976, 158832563,509086778,1631714194,5229935889, 16762880107,53728029453,172207945799,551957272549, 1769121798104,5670351840955,18174492018967] |