n | a(n) |
---|---|
0 | 2 |
1 | 1 |
2 | 5 |
3 | 7 |
4 | 25 |
5 | 51 |
6 | 149 |
7 | 351 |
8 | 945 |
9 | 2347 |
10 | 6125 |
11 | 15511 |
12 | 40009 |
13 | 102051 |
14 | 262085 |
15 | 670287 |
16 | 1718625 |
17 | 4399771 |
18 | 11274269 |
19 | 28873351 |
[2,1,5,7,25,51,149,351,945,2347,6125,15511,40009, 102051,262085,670287,1718625,4399771,11274269, 28873351] |