n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 15 |
3 | 43 |
4 | 281 |
5 | 1121 |
6 | 5895 |
7 | 26363 |
8 | 129361 |
9 | 601441 |
10 | 2884575 |
11 | 13587883 |
12 | 64675241 |
13 | 305992961 |
14 | 1452764055 |
15 | 6883436603 |
16 | 32652805921 |
17 | 154790287681 |
18 | 734067052335 |
19 | 3480407844523 |
20 | 16503687369401 |
21 | 78252676717601 |
[1,1,15,43,281,1121,5895,26363,129361,601441, 2884575,13587883,64675241,305992961,1452764055, 6883436603,32652805921,154790287681,734067052335, 3480407844523,16503687369401,78252676717601] |