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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 7 |
| 3 | 55 |
| 4 | 97 |
| 5 | 455 |
| 6 | 575 |
| 7 | 3385 |
| 8 | 11441 |
| 9 | 12625 |
| 10 | 19447 |
| 11 | 35461 |
| 12 | 81215 |
| 13 | 95327 |
[5,7,55,97,455,575,3385,11441,12625,19447,35461, 81215,95327] |