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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | -9 |
| 1 | -15 |
| 2 | -33 |
| 3 | -69 |
| 4 | -138 |
| 5 | -254 |
| 6 | -453 |
| 7 | -762 |
| 8 | -1271 |
| 9 | -2025 |
| 10 | -3225 |
| 11 | -4980 |
| 12 | -7653 |
| 13 | -11472 |
| 14 | -17124 |
| 15 | -25095 |
| 16 | -36507 |
| 17 | -52481 |
| 18 | -74934 |
| 19 | -105876 |
| 20 | -148643 |
| 21 | -206982 |
| 22 | -286437 |
| 23 | -393488 |
| 24 | -537828 |
| 25 | -730362 |
| 26 | -987110 |
| 27 | -1326579 |
| 28 | -1775037 |
| 29 | -2363135 |
| 30 | -3133227 |
| 31 | -4135902 |
| 32 | -5438789 |
| 33 | -7123452 |
| 34 | -9296976 |
[1,-9,-15,-33,-69,-138,-254,-453,-762,-1271,-2025, -3225,-4980,-7653,-11472,-17124,-25095,-36507, -52481,-74934,-105876,-148643,-206982,-286437, -393488,-537828,-730362,-987110,-1326579,-1775037, -2363135,-3133227,-4135902,-5438789,-7123452, -9296976] |