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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 3 |
| 5 | 5 |
| 6 | 5 |
| 7 | 8 |
| 8 | 8 |
| 9 | 11 |
| 10 | 11 |
| 11 | 18 |
| 12 | 18 |
| 13 | 30 |
| 14 | 30 |
| 15 | 53 |
| 16 | 53 |
| 17 | 93 |
| 18 | 93 |
| 19 | 187 |
| 20 | 187 |
| 21 | 329 |
| 22 | 329 |
| 23 | 600 |
| 24 | 600 |
| 25 | 1080 |
| 26 | 1080 |
| 27 | 1936 |
| 28 | 1936 |
| 29 | 3657 |
| 30 | 3657 |
| 31 | 6756 |
| 32 | 6756 |
| 33 | 12328 |
| 34 | 12328 |
| 35 | 23127 |
| 36 | 23127 |
| 37 | 43909 |
| 38 | 43909 |
| 39 | 83377 |
| 40 | 83377 |
| 41 | 156049 |
| 42 | 156049 |
| 43 | 295916 |
| 44 | 295916 |
| 45 | 570396 |
| 46 | 570396 |
| 47 | 1090772 |
[0,1,3,3,5,5,8,8,11,11,18,18,30,30,53,53,93,93, 187,187,329,329,600,600,1080,1080,1936,1936,3657, 3657,6756,6756,12328,12328,23127,23127,43909, 43909,83377,83377,156049,156049,295916,295916, 570396,570396,1090772] |