n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 111 |
4 | 951 |
5 | 8463 |
6 | 75975 |
7 | 683391 |
8 | 6149751 |
9 | 55346223 |
10 | 498112935 |
11 | 4483010271 |
12 | 40347080151 |
13 | 363123696783 |
14 | 3268113221895 |
15 | 29413018898751 |
16 | 264717169892151 |
17 | 2382454528636143 |
18 | 21442090756938855 |
[1,3,15,111,951,8463,75975,683391,6149751, 55346223,498112935,4483010271,40347080151, 363123696783,3268113221895,29413018898751, 264717169892151,2382454528636143, 21442090756938855] |