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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 5 |
| 3 | 13 |
| 4 | 27 |
| 5 | 57 |
| 6 | 119 |
| 7 | 243 |
| 8 | 495 |
| 9 | 999 |
| 10 | 2005 |
| 11 | 4033 |
| 12 | 8121 |
| 13 | 16281 |
| 14 | 32591 |
| 15 | 65295 |
| 16 | 130755 |
| 17 | 261711 |
| 18 | 523649 |
| 19 | 1047617 |
| 20 | 2095617 |
| 21 | 4192321 |
| 22 | 8386049 |
| 23 | 16773121 |
| 24 | 33548387 |
| 25 | 67100753 |
| 26 | 134207491 |
| 27 | 268419121 |
| 28 | 536846371 |
| 29 | 1073709105 |
| 30 | 2147442723 |
| 31 | 4294914049 |
| 32 | 8589842435 |
[1,3,5,13,27,57,119,243,495,999,2005,4033,8121, 16281,32591,65295,130755,261711,523649,1047617, 2095617,4192321,8386049,16773121,33548387, 67100753,134207491,268419121,536846371,1073709105, 2147442723,4294914049,8589842435] |