The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 0 |
| 4 | -2 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | -3 |
| 9 | 1 |
| 10 | 0 |
| 11 | 2 |
| 12 | 3 |
| 13 | -4 |
| 14 | 1 |
| 15 | -2 |
| 16 | -2 |
| 17 | 2 |
| 18 | 6 |
| 19 | -5 |
| 20 | 1 |
| 21 | 0 |
| 22 | -4 |
| 23 | -6 |
| 24 | 0 |
| 25 | 10 |
| 26 | -6 |
| 27 | 1 |
| 28 | 5 |
| 29 | 5 |
| 30 | -3 |
| 31 | -11 |
| 32 | -5 |
| 33 | 15 |
| 34 | -7 |
| 35 | 1 |
| 36 | 0 |
| 37 | 10 |
| 38 | 15 |
| 39 | 4 |
| 40 | -15 |
| 41 | -14 |
| 42 | 21 |
| 43 | -8 |
| 44 | 1 |
| 45 | -14 |
| 46 | -14 |
| 47 | 6 |
| 48 | 26 |
| 49 | 19 |
| 50 | -15 |
| 51 | -28 |
| 52 | 28 |
| 53 | -9 |
| 54 | 1 |
| 55 | 0 |
| 56 | -28 |
| 57 | -42 |
| 58 | -16 |
| 59 | 30 |
| 60 | 42 |
| 61 | -7 |
| 62 | -48 |
| 63 | 36 |
| 64 | -10 |
| 65 | 1 |
[1,-1,1,0,-2,1,1,1,-3,1,0,2,3,-4,1,-2,-2,2,6,-5,1, 0,-4,-6,0,10,-6,1,5,5,-3,-11,-5,15,-7,1,0,10,15,4, -15,-14,21,-8,1,-14,-14,6,26,19,-15,-28,28,-9,1,0, -28,-42,-16,30,42,-7,-48,36,-10,1] |