n | a(n) |
---|---|
1 | 3 |
2 | 26 |
3 | 208 |
4 | 1667 |
5 | 13338 |
6 | 106704 |
7 | 853635 |
8 | 6829082 |
9 | 54632656 |
10 | 437061251 |
11 | 3496490010 |
12 | 27971920080 |
13 | 223775360643 |
14 | 1790202885146 |
15 | 14321623081168 |
16 | 114572984649347 |
17 | 916583877194778 |
18 | 7332671017558224 |
19 | 58661368140465795 |
20 | 469290945123726362 |
[3,26,208,1667,13338,106704,853635,6829082, 54632656,437061251,3496490010,27971920080, 223775360643,1790202885146,14321623081168, 114572984649347,916583877194778,7332671017558224, 58661368140465795,469290945123726362] |