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