n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 151 |
3 | 1275 |
4 | 9751 |
5 | 70035 |
6 | 481951 |
7 | 3216795 |
8 | 20991751 |
9 | 134667555 |
10 | 852639151 |
11 | 5343198315 |
12 | 33212784151 |
13 | 205111785075 |
14 | 1260114546751 |
15 | 7708980203835 |
16 | 46999640806951 |
17 | 285743822630595 |
18 | 1733261544204751 |
[1,15,151,1275,9751,70035,481951,3216795,20991751, 134667555,852639151,5343198315,33212784151, 205111785075,1260114546751,7708980203835, 46999640806951,285743822630595,1733261544204751] |