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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 11 |
| 6 | 23 |
| 7 | 53 |
| 8 | 111 |
| 9 | 235 |
| 10 | 483 |
| 11 | 988 |
| 12 | 1998 |
| 13 | 4036 |
| 14 | 8114 |
| 15 | 16289 |
| 16 | 32645 |
| 17 | 65389 |
| 18 | 130887 |
| 19 | 261923 |
| 20 | 524014 |
| 21 | 1048251 |
| 22 | 2096753 |
| 23 | 4193832 |
| 24 | 8388034 |
| 25 | 16776544 |
| 26 | 33553622 |
| 27 | 67107919 |
| 28 | 134216597 |
| 29 | 268434140 |
| 30 | 536869355 |
| 31 | 1073740012 |
| 32 | 2147481511 |
| 33 | 4294964834 |
| 34 | 8589931700 |
[0,1,1,2,4,11,23,53,111,235,483,988,1998,4036, 8114,16289,32645,65389,130887,261923,524014, 1048251,2096753,4193832,8388034,16776544,33553622, 67107919,134216597,268434140,536869355,1073740012, 2147481511,4294964834,8589931700] |