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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 1 |
| 4 | 7 |
| 5 | 93 |
| 6 | 315 |
| 7 | 1 |
| 8 | 15 |
| 9 | 13797 |
| 10 | 3 |
| 11 | 89 |
| 12 | 41943 |
| 13 | 9709 |
| 14 | 9256395 |
| 15 | 1 |
| 16 | 31 |
| 17 | 117 |
| 18 | 1857283155 |
| 19 | 105 |
| 20 | 25575 |
| 21 | 381 |
| 22 | 91 |
| 23 | 178481 |
| 24 | 42799 |
| 25 | 5 |
| 26 | 84973577874915 |
| 27 | 19065 |
| 28 | 4599 |
| 29 | 4885260612740877 |
| 30 | 18900352534538475 |
| 31 | 1 |
| 32 | 63 |
| 33 | 1101298153654301589 |
[1,1,3,1,7,93,315,1,15,13797,3,89,41943,9709, 9256395,1,31,117,1857283155,105,25575,381,91, 178481,42799,5,84973577874915,19065,4599, 4885260612740877,18900352534538475,1,63, 1101298153654301589] |