n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 21 |
3 | 53 |
4 | 173 |
5 | 865 |
6 | 4029 |
7 | 16637 |
8 | 65381 |
9 | 262577 |
10 | 1043025 |
11 | 4111721 |
12 | 16309705 |
13 | 64954017 |
14 | 259236073 |
15 | 1035773481 |
[1,5,21,53,173,865,4029,16637,65381,262577, 1043025,4111721,16309705,64954017,259236073, 1035773481] |