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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | -3 |
| 4 | 3 |
| 5 | -5 |
| 6 | 13 |
| 7 | 25 |
| 8 | 31 |
| 9 | -33 |
| 10 | 37 |
| 11 | -39 |
| 12 | 55 |
| 13 | -57 |
| 14 | -71 |
| 15 | 79 |
| 16 | -87 |
| 17 | -159 |
| 18 | 181 |
| 19 | -183 |
| 20 | 219 |
| 21 | -221 |
| 22 | -243 |
| 23 | -255 |
| 24 | 255 |
| 25 | 279 |
| 26 | -281 |
| 27 | 289 |
| 28 | -291 |
| 29 | 307 |
| 30 | 325 |
| 31 | 333 |
| 32 | -353 |
| 33 | -369 |
| 34 | 375 |
| 35 | -395 |
| 36 | -423 |
| 37 | -435 |
| 38 | -495 |
| 39 | -501 |
| 40 | 507 |
| 41 | -551 |
| 42 | -579 |
| 43 | -633 |
| 44 | 703 |
| 45 | -711 |
| 46 | -731 |
| 47 | 739 |
| 48 | 781 |
| 49 | 825 |
| 50 | -857 |
| 51 | 891 |
| 52 | 907 |
| 53 | 927 |
| 54 | 955 |
| 55 | -957 |
| 56 | -963 |
| 57 | -981 |
[0,1,-3,3,-5,13,25,31,-33,37,-39,55,-57,-71,79, -87,-159,181,-183,219,-221,-243,-255,255,279,-281, 289,-291,307,325,333,-353,-369,375,-395,-423,-435, -495,-501,507,-551,-579,-633,703,-711,-731,739, 781,825,-857,891,907,927,955,-957,-963,-981] |