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