n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 69 |
3 | 255 |
4 | 1097 |
5 | 4765 |
6 | 21237 |
7 | 95873 |
8 | 437537 |
9 | 2012997 |
10 | 9321899 |
11 | 43397633 |
12 | 202926209 |
13 | 952396005 |
14 | 4484003747 |
15 | 21168581905 |
16 | 100170213121 |
17 | 474981809053 |
18 | 2256307682541 |
19 | 10735210220803 |
20 | 51148724456627 |
21 | 244007372314919 |
[1,15,69,255,1097,4765,21237,95873,437537,2012997, 9321899,43397633,202926209,952396005,4484003747, 21168581905,100170213121,474981809053, 2256307682541,10735210220803,51148724456627, 244007372314919] |