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