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