The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 0 |
| 5 | 2 |
| 6 | 5 |
| 7 | 1 |
| 8 | 6 |
| 9 | 0 |
| 10 | 3 |
| 11 | 7 |
| 12 | 2 |
| 13 | 8 |
| 14 | 1 |
| 15 | 9 |
| 16 | 0 |
| 17 | 4 |
| 18 | 9 |
| 19 | 3 |
| 20 | 10 |
| 21 | 2 |
| 22 | 11 |
| 23 | 1 |
| 24 | 12 |
| 25 | 0 |
| 26 | 5 |
| 27 | 11 |
| 28 | 4 |
| 29 | 12 |
| 30 | 3 |
| 31 | 13 |
| 32 | 2 |
| 33 | 14 |
| 34 | 1 |
| 35 | 15 |
| 36 | 0 |
| 37 | 6 |
| 38 | 13 |
| 39 | 5 |
| 40 | 14 |
| 41 | 4 |
| 42 | 15 |
| 43 | 3 |
| 44 | 16 |
| 45 | 2 |
| 46 | 17 |
| 47 | 1 |
| 48 | 18 |
| 49 | 0 |
[0,0,1,3,0,2,5,1,6,0,3,7,2,8,1,9,0,4,9,3,10,2,11, 1,12,0,5,11,4,12,3,13,2,14,1,15,0,6,13,5,14,4,15, 3,16,2,17,1,18,0] |