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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 1 |
| 6 | 7 |
| 7 | 49 |
| 8 | 9 |
| 9 | 7 |
| 10 | 13 |
| 11 | 169 |
| 12 | 91 |
| 13 | 4 |
| 14 | 133 |
| 15 | 21 |
| 16 | 361 |
| 17 | 1729 |
| 18 | 169 |
| 19 | 19 |
| 20 | 7 |
| 21 | 961 |
| 22 | 133 |
| 23 | 9 |
| 24 | 39 |
| 25 | 21793 |
| 26 | 481 |
| 27 | 31 |
| 28 | 9331 |
| 29 | 301 |
| 30 | 3367 |
| 31 | 49 |
| 32 | 817 |
| 33 | 13 |
| 34 | 361 |
| 35 | 931 |
| 36 | 1813 |
| 37 | 63 |
| 38 | 16 |
[0,1,1,3,1,7,49,9,7,13,169,91,4,133,21,361,1729, 169,19,7,961,133,9,39,21793,481,31,9331,301,3367, 49,817,13,361,931,1813,63,16] |