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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 14 |
| 6 | 26 |
| 7 | 52 |
| 8 | 104 |
| 9 | 201 |
| 10 | 379 |
| 11 | 751 |
| 12 | 1422 |
| 13 | 2679 |
| 14 | 5068 |
| 15 | 9383 |
| 16 | 17249 |
| 17 | 31285 |
| 18 | 57171 |
| 19 | 103476 |
| 20 | 186921 |
| 21 | 333991 |
| 22 | 594921 |
| 23 | 1044076 |
| 24 | 1837839 |
| 25 | 3198889 |
| 26 | 5561453 |
| 27 | 9689270 |
| 28 | 16763804 |
| 29 | 28909679 |
| 30 | 49142265 |
| 31 | 83418913 |
[1,2,3,7,14,26,52,104,201,379,751,1422,2679,5068, 9383,17249,31285,57171,103476,186921,333991, 594921,1044076,1837839,3198889,5561453,9689270, 16763804,28909679,49142265,83418913] |