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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 10 |
| 7 | 19 |
| 8 | 34 |
| 9 | 63 |
| 10 | 115 |
| 11 | 213 |
| 12 | 391 |
| 13 | 723 |
| 14 | 1333 |
| 15 | 2463 |
| 16 | 4547 |
| 17 | 8403 |
| 18 | 15522 |
| 19 | 28686 |
| 20 | 53006 |
| 21 | 97963 |
| 22 | 181042 |
| 23 | 334606 |
| 24 | 618415 |
| 25 | 1142994 |
| 26 | 2112545 |
| 27 | 3904592 |
| 28 | 7216810 |
| 29 | 13338856 |
| 30 | 24654268 |
| 31 | 45568784 |
| 32 | 84225393 |
| 33 | 155675230 |
| 34 | 287737327 |
| 35 | 531830605 |
| 36 | 982993368 |
| 37 | 1816887637 |
| 38 | 3358192905 |
[1,1,1,2,3,6,10,19,34,63,115,213,391,723,1333, 2463,4547,8403,15522,28686,53006,97963,181042, 334606,618415,1142994,2112545,3904592,7216810, 13338856,24654268,45568784,84225393,155675230, 287737327,531830605,982993368,1816887637, 3358192905] |