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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 3 |
| 2 | 2 |
| 3 | 1 |
| 4 | 8 |
| 5 | 13 |
| 6 | 16 |
| 7 | 25 |
| 8 | 46 |
| 9 | 75 |
| 10 | 116 |
| 11 | 187 |
| 12 | 308 |
| 13 | 499 |
| 14 | 802 |
| 15 | 1297 |
| 16 | 2104 |
| 17 | 3405 |
| 18 | 5504 |
| 19 | 8905 |
| 20 | 14414 |
| 21 | 23323 |
| 22 | 37732 |
| 23 | 61051 |
| 24 | 98788 |
| 25 | 159843 |
| 26 | 258626 |
| 27 | 418465 |
| 28 | 677096 |
| 29 | 1095565 |
| 30 | 1772656 |
| 31 | 2868217 |
| 32 | 4640878 |
| 33 | 7509099 |
| 34 | 12149972 |
| 35 | 19659067 |
| 36 | 31809044 |
| 37 | 51468115 |
| 38 | 83277154 |
[4,3,2,1,8,13,16,25,46,75,116,187,308,499,802, 1297,2104,3405,5504,8905,14414,23323,37732,61051, 98788,159843,258626,418465,677096,1095565,1772656, 2868217,4640878,7509099,12149972,19659067, 31809044,51468115,83277154] |