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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 12 |
| 6 | 23 |
| 7 | 45 |
| 8 | 92 |
| 9 | 183 |
| 10 | 434 |
| 11 | 936 |
| 12 | 2012 |
| 13 | 4365 |
| 14 | 9551 |
| 15 | 20748 |
| 16 | 45065 |
| 17 | 108070 |
| 18 | 245109 |
| 19 | 553308 |
| 20 | 1253492 |
| 21 | 2846553 |
| 22 | 6482338 |
| 23 | 14721344 |
| 24 | 33423804 |
| 25 | 75916943 |
| 26 | 187505118 |
| 27 | 441004027 |
| 28 | 1032009219 |
| 29 | 2419549459 |
| 30 | 5676752449 |
| 31 | 13331861333 |
| 32 | 31398821908 |
| 33 | 73794930935 |
[1,1,2,3,5,12,23,45,92,183,434,936,2012,4365,9551, 20748,45065,108070,245109,553308,1253492,2846553, 6482338,14721344,33423804,75916943,187505118, 441004027,1032009219,2419549459,5676752449, 13331861333,31398821908,73794930935] |