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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 9 |
| 7 | 21 |
| 8 | 23 |
| 9 | 27 |
| 10 | 57 |
| 11 | 75 |
| 12 | 103 |
| 13 | 169 |
| 14 | 219 |
| 15 | 245 |
| 16 | 461 |
| 17 | 695 |
| 18 | 1169 |
| 19 | 3597 |
| 20 | 3637 |
| 21 | 7495 |
| 22 | 27743 |
| 23 | 28799 |
| 24 | 32501 |
[0,1,3,5,7,9,21,23,27,57,75,103,169,219,245,461, 695,1169,3597,3637,7495,27743,28799,32501] |