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 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | -1 |
| 9 | 1 |
| 10 | 0 |
| 11 | 0 |
| 12 | 1 |
| 13 | 0 |
| 14 | 2 |
| 15 | 0 |
| 16 | -4 |
| 17 | 0 |
| 18 | 4 |
| 19 | 0 |
| 20 | -2 |
| 21 | 7 |
| 22 | -5 |
| 23 | 0 |
| 24 | -1 |
| 25 | -1 |
| 26 | 4 |
| 27 | -2 |
| 28 | 4 |
| 29 | 0 |
| 30 | 3 |
| 31 | 0 |
| 32 | -11 |
| 33 | 16 |
| 34 | -15 |
| 35 | 19 |
| 36 | -12 |
| 37 | 0 |
| 38 | 5 |
| 39 | 2 |
| 40 | -12 |
| 41 | 0 |
| 42 | 24 |
| 43 | 0 |
| 44 | -19 |
| 45 | 12 |
| 46 | -7 |
| 47 | 0 |
| 48 | -9 |
| 49 | 23 |
| 50 | -21 |
| 51 | 0 |
| 52 | 5 |
| 53 | 0 |
| 54 | 2 |
| 55 | 2 |
| 56 | -2 |
| 57 | 14 |
| 58 | -5 |
| 59 | 0 |
| 60 | -2 |
| 61 | 0 |
| 62 | 12 |
| 63 | 9 |
| 64 | -41 |
| 65 | 32 |
| 66 | 14 |
| 67 | 0 |
| 68 | -44 |
| 69 | 58 |
| 70 | -5 |
| 71 | 0 |
| 72 | -42 |
| 73 | 0 |
| 74 | 9 |
| 75 | 5 |
| 76 | 0 |
| 77 | 75 |
| 78 | -61 |
| 79 | 0 |
| 80 | -37 |
| 81 | 9 |
| 82 | -5 |
| 83 | 0 |
| 84 | 47 |
| 85 | -48 |
| 86 | 76 |
| 87 | -5 |
| 88 | -65 |
| 89 | 0 |
| 90 | 42 |
| 91 | 42 |
[1,0,0,0,0,1,0,-1,1,0,0,1,0,2,0,-4,0,4,0,-2,7,-5, 0,-1,-1,4,-2,4,0,3,0,-11,16,-15,19,-12,0,5,2,-12, 0,24,0,-19,12,-7,0,-9,23,-21,0,5,0,2,2,-2,14,-5,0, -2,0,12,9,-41,32,14,0,-44,58,-5,0,-42,0,9,5,0,75, -61,0,-37,9,-5,0,47,-48,76,-5,-65,0,42,42] |