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