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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 3 |
| 4 | 27 |
| 5 | 39 |
| 6 | 87 |
| 7 | 15 |
| 8 | 495 |
| 9 | 927 |
| 10 | 1887 |
| 11 | 3135 |
| 12 | 7103 |
| 13 | 9855 |
| 14 | 21887 |
| 15 | 255 |
| 16 | 130815 |
| 17 | 260607 |
| 18 | 521727 |
| 19 | 1033215 |
| 20 | 2079743 |
| 21 | 4089855 |
| 22 | 8214527 |
| 23 | 15732735 |
| 24 | 32501759 |
| 25 | 60792831 |
| 26 | 123691007 |
| 27 | 205275135 |
| 28 | 465289215 |
| 29 | 644251647 |
| 30 | 1431666687 |
| 31 | 65535 |
| 32 | 8589869055 |
| 33 | 17179475967 |
[1,1,5,3,27,39,87,15,495,927,1887,3135,7103,9855, 21887,255,130815,260607,521727,1033215,2079743, 4089855,8214527,15732735,32501759,60792831, 123691007,205275135,465289215,644251647, 1431666687,65535,8589869055,17179475967] |