The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 3 |
| 6 | 0 |
| 7 | 5 |
| 8 | 0 |
| 9 | 4 |
| 10 | 1 |
| 11 | 9 |
| 12 | 0 |
| 13 | 11 |
| 14 | 3 |
| 15 | 6 |
| 16 | 0 |
| 17 | 15 |
| 18 | 0 |
| 19 | 17 |
| 20 | 0 |
| 21 | 9 |
| 22 | 7 |
| 23 | 21 |
| 24 | 0 |
| 25 | 18 |
| 26 | 9 |
| 27 | 13 |
| 28 | 0 |
| 29 | 27 |
| 30 | 0 |
| 31 | 29 |
| 32 | 0 |
| 33 | 17 |
| 34 | 13 |
| 35 | 24 |
| 36 | 0 |
| 37 | 35 |
| 38 | 15 |
| 39 | 21 |
| 40 | 0 |
| 41 | 39 |
| 42 | 0 |
| 43 | 41 |
| 44 | 3 |
| 45 | 16 |
| 46 | 19 |
| 47 | 45 |
| 48 | 0 |
| 49 | 40 |
| 50 | 6 |
| 51 | 29 |
| 52 | 5 |
| 53 | 51 |
| 54 | 0 |
| 55 | 37 |
| 56 | 0 |
[0,0,1,0,3,0,5,0,4,1,9,0,11,3,6,0,15,0,17,0,9,7, 21,0,18,9,13,0,27,0,29,0,17,13,24,0,35,15,21,0,39, 0,41,3,16,19,45,0,40,6,29,5,51,0,37,0] |