n | a(n) |
---|---|
0 | 3 |
1 | 15 |
2 | 89 |
3 | 567 |
4 | 3713 |
5 | 24615 |
6 | 164369 |
7 | 1103607 |
8 | 7444673 |
9 | 50431815 |
10 | 342942449 |
11 | 2340125847 |
12 | 16018073633 |
13 | 109949712615 |
14 | 756587253329 |
15 | 5217746527287 |
16 | 36054040542593 |
17 | 249557173563015 |
18 | 1729973554841009 |
19 | 12008254925907927 |
[3,15,89,567,3713,24615,164369,1103607,7444673, 50431815,342942449,2340125847,16018073633, 109949712615,756587253329,5217746527287, 36054040542593,249557173563015,1729973554841009, 12008254925907927] |