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