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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 1 |
| 3 | 27 |
| 4 | 15 |
| 5 | 1 |
| 6 | 693 |
| 7 | 513 |
| 8 | 63 |
| 9 | 1 |
| 10 | 52812 |
| 11 | 47619 |
| 12 | 8289 |
| 13 | 255 |
| 14 | 1 |
| 15 | 12628008 |
| 16 | 13176189 |
| 17 | 2920527 |
| 18 | 131841 |
| 19 | 1023 |
| 20 | 1 |
| 21 | 9924266772 |
| 22 | 11586274263 |
| 23 | 3078907929 |
| 24 | 181929087 |
| 25 | 2101761 |
| 26 | 4095 |
| 27 | 1 |
| 28 | 26507035453923 |
| 29 | 33825995695125 |
| 30 | 10365262415703 |
[1,3,1,27,15,1,693,513,63,1,52812,47619,8289,255, 1,12628008,13176189,2920527,131841,1023,1, 9924266772,11586274263,3078907929,181929087, 2101761,4095,1,26507035453923,33825995695125, 10365262415703] |