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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 7 |
| 9 | 9 |
| 10 | 10 |
| 11 | 19 |
| 12 | 20 |
| 13 | 21 |
| 14 | 22 |
| 15 | 25 |
| 16 | 26 |
| 17 | 31 |
| 18 | 47 |
| 19 | 48 |
| 20 | 89 |
| 21 | 90 |
| 22 | 91 |
| 23 | 92 |
| 24 | 93 |
| 25 | 94 |
| 26 | 95 |
[0,1,2,3,4,5,6,7,9,10,19,20,21,22,25,26,31,47,48, 89,90,91,92,93,94,95] |