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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 1 |
| 3 | -2 |
| 4 | 4 |
| 5 | -4 |
| 6 | 5 |
| 7 | -6 |
| 8 | 9 |
| 9 | -12 |
| 10 | 13 |
| 11 | -16 |
| 12 | 21 |
| 13 | -26 |
| 14 | 29 |
| 15 | -36 |
| 16 | 46 |
| 17 | -54 |
| 18 | 62 |
| 19 | -76 |
| 20 | 94 |
| 21 | -108 |
| 22 | 126 |
| 23 | -150 |
| 24 | 179 |
| 25 | -210 |
| 26 | 239 |
| 27 | -282 |
| 28 | 335 |
| 29 | -384 |
| 30 | 440 |
| 31 | -512 |
| 32 | 597 |
| 33 | -684 |
| 34 | 781 |
| 35 | -902 |
| 36 | 1041 |
| 37 | -1186 |
| 38 | 1347 |
| 39 | -1544 |
| 40 | 1768 |
| 41 | -2006 |
| 42 | 2268 |
| 43 | -2584 |
| 44 | 2941 |
| 45 | -3318 |
| 46 | 3742 |
| 47 | -4236 |
| 48 | 4792 |
| 49 | -5392 |
[1,-2,1,-2,4,-4,5,-6,9,-12,13,-16,21,-26,29,-36, 46,-54,62,-76,94,-108,126,-150,179,-210,239,-282, 335,-384,440,-512,597,-684,781,-902,1041,-1186, 1347,-1544,1768,-2006,2268,-2584,2941,-3318,3742, -4236,4792,-5392] |