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| n | a(n) |
|---|---|
| 1 | -63 |
| 2 | -54 |
| 3 | -49 |
| 4 | -45 |
| 5 | -42 |
| 6 | -36 |
| 7 | -35 |
| 8 | -28 |
| 9 | -27 |
| 10 | -21 |
| 11 | -18 |
| 12 | -14 |
| 13 | -9 |
| 14 | -7 |
| 15 | 7 |
| 16 | 9 |
| 17 | 14 |
| 18 | 18 |
| 19 | 21 |
| 20 | 27 |
| 21 | 28 |
| 22 | 35 |
| 23 | 36 |
| 24 | 42 |
| 25 | 45 |
| 26 | 49 |
| 27 | 54 |
| 28 | 63 |
[-63,-54,-49,-45,-42,-36,-35,-28,-27,-21,-18,-14, -9,-7,7,9,14,18,21,27,28,35,36,42,45,49,54,63] |