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