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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 17 |
| 6 | 31 |
| 7 | 71 |
| 8 | 97 |
| 9 | 167 |
| 10 | 175 |
| 11 | 209 |
| 12 | 385 |
| 13 | 2159 |
| 14 | 5617 |
| 15 | 8921 |
| 16 | 33425 |
| 17 | 39119 |
| 18 | 76625 |
| 19 | 110249 |
| 20 | 192127 |
| 21 | 255265 |
[1,3,5,7,17,31,71,97,167,175,209,385,2159,5617, 8921,33425,39119,76625,110249,192127,255265] |