| 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 | 18 |
| 18 | 19 |
| 19 | 20 |
| 20 | 21 |
| 21 | 22 |
| 22 | 23 |
| 23 | 24 |
| 24 | 25 |
| 25 | 26 |
| 26 | 27 |
| 27 | 28 |
| 28 | 29 |
| 29 | 30 |
| 30 | 31 |
| 31 | 35 |
| 32 | 36 |
| 33 | 37 |
| 34 | 38 |
| 35 | 39 |
| 36 | 40 |
| 37 | 41 |
| 38 | 42 |
| 39 | 43 |
| 40 | 44 |
| 41 | 45 |
| 42 | 46 |
| 43 | 47 |
| 44 | 52 |
| 45 | 53 |
| 46 | 54 |
| 47 | 55 |
| 48 | 56 |
| 49 | 57 |
| 50 | 58 |
| 51 | 59 |
| 52 | 60 |
| 53 | 61 |
| 54 | 62 |
| 55 | 63 |
| 56 | 69 |
| 57 | 70 |
| 58 | 71 |
| 59 | 72 |
| 60 | 73 |
| 61 | 74 |
| 62 | 75 |
| 63 | 76 |
| 64 | 77 |
| 65 | 78 |
| 66 | 79 |
| 67 | 86 |
| 68 | 87 |
| 69 | 88 |
| 70 | 89 |
[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,20, 21,22,23,24,25,26,27,28,29,30,31,35,36,37,38,39, 40,41,42,43,44,45,46,47,52,53,54,55,56,57,58,59, 60,61,62,63,69,70,71,72,73,74,75,76,77,78,79,86, 87,88,89] |