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