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 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 0 |
| 5 | 2 |
| 6 | -2 |
| 7 | 2 |
| 8 | 0 |
| 9 | 4 |
| 10 | -2 |
| 11 | 2 |
| 12 | 0 |
| 13 | 2 |
| 14 | -2 |
| 15 | 6 |
| 16 | 0 |
| 17 | 2 |
| 18 | -8 |
| 19 | 2 |
| 20 | 0 |
| 21 | 6 |
| 22 | -2 |
| 23 | 2 |
| 24 | 0 |
| 25 | 4 |
| 26 | -2 |
| 27 | 8 |
| 28 | 0 |
| 29 | 2 |
| 30 | -14 |
| 31 | 2 |
| 32 | 0 |
| 33 | 6 |
| 34 | -2 |
| 35 | 6 |
| 36 | 4 |
| 37 | 2 |
| 38 | -2 |
| 39 | 6 |
| 40 | 0 |
| 41 | 2 |
| 42 | -14 |
| 43 | 2 |
| 44 | 0 |
| 45 | 16 |
| 46 | -2 |
| 47 | 2 |
| 48 | 0 |
| 49 | 4 |
| 50 | -8 |
| 51 | 6 |
| 52 | 0 |
| 53 | 2 |
| 54 | -24 |
| 55 | 6 |
| 56 | 0 |
| 57 | 6 |
| 58 | -2 |
| 59 | 2 |
| 60 | 8 |
| 61 | 2 |
| 62 | -2 |
| 63 | 16 |
| 64 | 0 |
| 65 | 6 |
| 66 | -14 |
| 67 | 2 |
| 68 | 0 |
| 69 | 6 |
| 70 | -14 |
| 71 | 2 |
| 72 | 0 |
| 73 | 2 |
| 74 | -2 |
| 75 | 16 |
| 76 | 0 |
| 77 | 6 |
| 78 | -14 |
| 79 | 2 |
| 80 | 0 |
| 81 | 16 |
[1,0,2,0,2,-2,2,0,4,-2,2,0,2,-2,6,0,2,-8,2,0,6,-2, 2,0,4,-2,8,0,2,-14,2,0,6,-2,6,4,2,-2,6,0,2,-14,2, 0,16,-2,2,0,4,-8,6,0,2,-24,6,0,6,-2,2,8,2,-2,16,0, 6,-14,2,0,6,-14,2,0,2,-2,16,0,6,-14,2,0,16] |