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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | -1 |
| 3 | -4 |
| 4 | 6 |
| 5 | -8 |
| 6 | 9 |
| 7 | 0 |
| 8 | -10 |
| 9 | 12 |
| 10 | -14 |
| 11 | 15 |
| 12 | 0 |
| 13 | -16 |
| 14 | -18 |
| 15 | 20 |
| 16 | 21 |
| 17 | 22 |
| 18 | -24 |
| 19 | 0 |
| 20 | -25 |
| 21 | 26 |
| 22 | -27 |
| 23 | -28 |
| 24 | 30 |
| 25 | 32 |
| 26 | 33 |
| 27 | -34 |
| 28 | 0 |
| 29 | -35 |
| 30 | -36 |
| 31 | -38 |
| 32 | 39 |
| 33 | 40 |
| 34 | 42 |
| 35 | 44 |
| 36 | -45 |
| 37 | 0 |
| 38 | -46 |
| 39 | -48 |
| 40 | 49 |
| 41 | -50 |
| 42 | 51 |
| 43 | -52 |
| 44 | 54 |
| 45 | 55 |
| 46 | 0 |
| 47 | -56 |
| 48 | -57 |
| 49 | -58 |
| 50 | 60 |
| 51 | 62 |
| 52 | -63 |
| 53 | 64 |
| 54 | 65 |
| 55 | 0 |
| 56 | -66 |
| 57 | -68 |
| 58 | -69 |
| 59 | 70 |
| 60 | -72 |
| 61 | 74 |
| 62 | 75 |
| 63 | 76 |
| 64 | 77 |
| 65 | -78 |
| 66 | 0 |
| 67 | -80 |
| 68 | -81 |
| 69 | -82 |
| 70 | -84 |
| 71 | 85 |
| 72 | 86 |
| 73 | 87 |
| 74 | -88 |
[0,-1,-4,6,-8,9,0,-10,12,-14,15,0,-16,-18,20,21, 22,-24,0,-25,26,-27,-28,30,32,33,-34,0,-35,-36, -38,39,40,42,44,-45,0,-46,-48,49,-50,51,-52,54,55, 0,-56,-57,-58,60,62,-63,64,65,0,-66,-68,-69,70, -72,74,75,76,77,-78,0,-80,-81,-82,-84,85,86,87, -88] |