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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 7 |
| 6 | 8 |
| 7 | 9 |
| 8 | 21 |
| 9 | 41 |
| 10 | 51 |
| 11 | 63 |
| 12 | 67 |
| 13 | 85 |
| 14 | 174 |
| 15 | 272 |
| 16 | 297 |
| 17 | 533 |
| 18 | 697 |
| 19 | 1326 |
| 20 | 1344 |
| 21 | 10668 |
| 22 | 10814 |
| 23 | 26252 |
| 24 | 51721 |
| 25 | 80342 |
| 26 | 123657 |
| 27 | 166227 |
| 28 | 171296 |
[1,2,3,6,7,8,9,21,41,51,63,67,85,174,272,297,533, 697,1326,1344,10668,10814,26252,51721,80342, 123657,166227,171296] |