| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 2 |
| 4 | 6 |
| 5 | 4 |
| 6 | 10 |
| 7 | 5 |
| 8 | 14 |
| 9 | 8 |
| 10 | 7 |
| 11 | 15 |
| 12 | 11 |
| 13 | 21 |
| 14 | 9 |
| 15 | 20 |
| 16 | 12 |
| 17 | 27 |
| 18 | 13 |
| 19 | 34 |
| 20 | 18 |
| 21 | 16 |
| 22 | 28 |
| 23 | 17 |
| 24 | 35 |
| 25 | 23 |
| 26 | 22 |
| 27 | 36 |
| 28 | 29 |
| 29 | 45 |
| 30 | 19 |
| 31 | 43 |
| 32 | 24 |
| 33 | 44 |
| 34 | 30 |
| 35 | 54 |
| 36 | 25 |
| 37 | 53 |
| 38 | 31 |
| 39 | 64 |
| 40 | 26 |
| 41 | 63 |
| 42 | 32 |
| 43 | 75 |
| 44 | 33 |
| 45 | 87 |
| 46 | 41 |
| 47 | 37 |
| 48 | 55 |
| 49 | 38 |
| 50 | 65 |
| 51 | 39 |
| 52 | 76 |
| 53 | 40 |
| 54 | 88 |
| 55 | 49 |
| 56 | 46 |
| 57 | 66 |
| 58 | 47 |
| 59 | 77 |
| 60 | 48 |
| 61 | 89 |
| 62 | 58 |
| 63 | 56 |
| 64 | 78 |
| 65 | 57 |
| 66 | 90 |
| 67 | 68 |
[1,3,2,6,4,10,5,14,8,7,15,11,21,9,20,12,27,13,34, 18,16,28,17,35,23,22,36,29,45,19,43,24,44,30,54, 25,53,31,64,26,63,32,75,33,87,41,37,55,38,65,39, 76,40,88,49,46,66,47,77,48,89,58,56,78,57,90,68] |