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| n | a(n) |
|---|---|
| 1 | 53 |
| 2 | 87 |
| 3 | 143 |
| 4 | 247 |
| 5 | 433 |
| 6 | 777 |
| 7 | 1413 |
| 8 | 2607 |
| 9 | 4863 |
| 10 | 9167 |
| 11 | 17433 |
| 12 | 33417 |
| 13 | 64493 |
| 14 | 125207 |
| 15 | 244303 |
| 16 | 478727 |
| 17 | 941473 |
| 18 | 1857097 |
| 19 | 3672373 |
| 20 | 7277087 |
| 21 | 14444703 |
| 22 | 28712287 |
| 23 | 57137993 |
| 24 | 113812297 |
| 25 | 226874333 |
| 26 | 452534727 |
| 27 | 903105263 |
| 28 | 1803032407 |
| 29 | 3600922513 |
[53,87,143,247,433,777,1413,2607,4863,9167,17433, 33417,64493,125207,244303,478727,941473,1857097, 3672373,7277087,14444703,28712287,57137993, 113812297,226874333,452534727,903105263, 1803032407,3600922513] |