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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 7 |
| 6 | 8 |
| 7 | 11 |
| 8 | 17 |
| 9 | 19 |
| 10 | 23 |
| 11 | 25 |
| 12 | 26 |
| 13 | 49 |
| 14 | 65 |
| 15 | 73 |
| 16 | 77 |
| 17 | 79 |
| 18 | 80 |
[0,1,2,5,7,8,11,17,19,23,25,26,49,65,73,77,79,80] |