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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 11 |
| 5 | 26 |
| 6 | 54 |
| 7 | 116 |
| 8 | 238 |
| 9 | 490 |
| 10 | 994 |
| 11 | 2011 |
| 12 | 4045 |
| 13 | 8131 |
| 14 | 16305 |
| 15 | 32672 |
| 16 | 65412 |
| 17 | 130924 |
| 18 | 261958 |
| 19 | 524066 |
| 20 | 1048301 |
| 21 | 2096826 |
| 22 | 4193904 |
| 23 | 8388135 |
| 24 | 16776641 |
| 25 | 33553759 |
| 26 | 67108053 |
| 27 | 134216782 |
| 28 | 268434324 |
| 29 | 536869595 |
| 30 | 1073740266 |
| 31 | 2147481835 |
| 32 | 4294965158 |
| 33 | 8589932129 |
[0,1,2,5,11,26,54,116,238,490,994,2011,4045,8131, 16305,32672,65412,130924,261958,524066,1048301, 2096826,4193904,8388135,16776641,33553759, 67108053,134216782,268434324,536869595,1073740266, 2147481835,4294965158,8589932129] |