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