n | a(n) |
---|---|
1 | 3 |
2 | 9 |
3 | 87 |
4 | 177 |
5 | 993 |
6 | 10833 |
7 | 35619 |
8 | 219873 |
9 | 2083713 |
10 | 8710539 |
11 | 55644339 |
12 | 473819481 |
13 | 2320792659 |
14 | 15120204297 |
15 | 119105713827 |
16 | 650725327233 |
17 | 4293779332929 |
18 | 32065818855387 |
19 | 188739799967427 |
20 | 1256510215733187 |
21 | 9061494550445907 |
[3,9,87,177,993,10833,35619,219873,2083713, 8710539,55644339,473819481,2320792659,15120204297, 119105713827,650725327233,4293779332929, 32065818855387,188739799967427,1256510215733187, 9061494550445907] |