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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | -2 |
| 2 | 3 |
| 3 | -4 |
| 4 | 5 |
| 5 | -6 |
| 6 | 7 |
| 7 | -8 |
| 8 | 9 |
| 9 | -10 |
| 10 | 11 |
| 11 | -12 |
| 12 | 13 |
| 13 | -14 |
| 14 | 15 |
| 15 | -16 |
| 16 | 17 |
| 17 | -18 |
| 18 | 19 |
| 19 | -20 |
| 20 | 21 |
| 21 | -22 |
| 22 | 23 |
| 23 | -24 |
| 24 | 25 |
| 25 | -26 |
| 26 | 27 |
| 27 | -28 |
| 28 | 29 |
| 29 | -30 |
| 30 | 31 |
| 31 | -32 |
| 32 | 33 |
| 33 | -34 |
| 34 | 35 |
| 35 | -36 |
| 36 | 37 |
| 37 | -38 |
| 38 | 39 |
| 39 | -40 |
| 40 | 41 |
| 41 | -42 |
| 42 | 43 |
| 43 | -44 |
| 44 | 45 |
| 45 | -46 |
| 46 | 47 |
| 47 | -48 |
| 48 | 49 |
| 49 | -50 |
| 50 | 51 |
| 51 | -52 |
| 52 | 53 |
| 53 | -54 |
| 54 | 55 |
| 55 | -56 |
| 56 | 57 |
| 57 | -58 |
| 58 | 59 |
| 59 | -60 |
| 60 | 61 |
| 61 | -62 |
| 62 | 63 |
| 63 | -64 |
| 64 | 65 |
| 65 | -66 |
| 66 | 67 |
| 67 | -68 |
| 68 | 69 |
| 69 | -70 |
| 70 | 71 |
| 71 | -72 |
| 72 | 73 |
| 73 | -74 |
| 74 | 75 |
[0,-2,3,-4,5,-6,7,-8,9,-10,11,-12,13,-14,15,-16, 17,-18,19,-20,21,-22,23,-24,25,-26,27,-28,29,-30, 31,-32,33,-34,35,-36,37,-38,39,-40,41,-42,43,-44, 45,-46,47,-48,49,-50,51,-52,53,-54,55,-56,57,-58, 59,-60,61,-62,63,-64,65,-66,67,-68,69,-70,71,-72, 73,-74,75] |