n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 29 |
4 | 103 |
5 | 399 |
6 | 1641 |
7 | 6989 |
8 | 30319 |
9 | 132735 |
10 | 583665 |
11 | 2571821 |
12 | 11343223 |
13 | 50052495 |
14 | 220904217 |
15 | 975041453 |
16 | 4303886431 |
17 | 18997962879 |
18 | 83860441185 |
19 | 370176644813 |
20 | 1634036256295 |
21 | 7212979975503 |
22 | 31839623961801 |
23 | 140546879747981 |
24 | 620403902366671 |
25 | 2738595239186943 |
[1,3,9,29,103,399,1641,6989,30319,132735,583665, 2571821,11343223,50052495,220904217,975041453, 4303886431,18997962879,83860441185,370176644813, 1634036256295,7212979975503,31839623961801, 140546879747981,620403902366671,2738595239186943] |