The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 0 |
| 2 | -2 |
| 3 | -4 |
| 4 | -6 |
| 5 | -8 |
| 6 | -10 |
| 7 | -12 |
| 8 | -14 |
| 9 | -16 |
| 10 | -18 |
| 11 | -20 |
| 12 | -22 |
| 13 | -24 |
| 14 | -26 |
| 15 | -28 |
| 16 | -30 |
| 17 | -32 |
| 18 | -34 |
| 19 | -36 |
| 20 | -38 |
| 21 | -40 |
| 22 | -42 |
| 23 | -44 |
| 24 | -46 |
| 25 | -48 |
| 26 | -50 |
| 27 | -52 |
| 28 | -54 |
| 29 | -56 |
| 30 | -58 |
| 31 | -60 |
| 32 | -62 |
| 33 | -64 |
| 34 | -66 |
| 35 | -68 |
| 36 | -70 |
| 37 | -72 |
| 38 | -74 |
| 39 | -76 |
| 40 | -78 |
| 41 | -80 |
| 42 | -82 |
| 43 | -84 |
| 44 | -86 |
| 45 | -88 |
| 46 | -90 |
| 47 | -92 |
| 48 | -94 |
| 49 | -96 |
| 50 | -98 |
| 51 | -100 |
| 52 | -102 |
[2,0,-2,-4,-6,-8,-10,-12,-14,-16,-18,-20,-22,-24, -26,-28,-30,-32,-34,-36,-38,-40,-42,-44,-46,-48, -50,-52,-54,-56,-58,-60,-62,-64,-66,-68,-70,-72, -74,-76,-78,-80,-82,-84,-86,-88,-90,-92,-94,-96, -98,-100,-102] |