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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 26 |
| 5 | 57 |
| 6 | 119 |
| 7 | 244 |
| 8 | 490 |
| 9 | 1001 |
| 10 | 2007 |
| 11 | 4052 |
| 12 | 8106 |
| 13 | 16281 |
| 14 | 32615 |
| 15 | 65372 |
| 16 | 130722 |
| 17 | 261793 |
| 18 | 523615 |
| 19 | 1047900 |
| 20 | 2095778 |
| 21 | 4192957 |
| 22 | 8385867 |
| 23 | 16774436 |
| 24 | 33549018 |
| 25 | 67103397 |
| 26 | 134206803 |
| 27 | 268424396 |
| 28 | 536849202 |
| 29 | 1073716417 |
| 30 | 2147443519 |
| 31 | 4294925504 |
| 32 | 8589845432 |
[1,2,5,13,26,57,119,244,490,1001,2007,4052,8106, 16281,32615,65372,130722,261793,523615,1047900, 2095778,4192957,8385867,16774436,33549018, 67103397,134206803,268424396,536849202,1073716417, 2147443519,4294925504,8589845432] |