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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 4 |
| 6 | 5 |
| 7 | 8 |
| 8 | 12 |
| 9 | 19 |
| 10 | 30 |
| 11 | 47 |
| 12 | 75 |
| 13 | 118 |
| 14 | 188 |
| 15 | 297 |
| 16 | 472 |
| 17 | 748 |
| 18 | 1188 |
| 19 | 1885 |
| 20 | 2992 |
| 21 | 4749 |
| 22 | 7538 |
| 23 | 11966 |
| 24 | 18994 |
| 25 | 30151 |
| 26 | 47861 |
| 27 | 75975 |
| 28 | 120602 |
| 29 | 191444 |
| 30 | 303898 |
| 31 | 482408 |
| 32 | 765774 |
| 33 | 1215591 |
| 34 | 1929629 |
| 35 | 3063096 |
| 36 | 4862361 |
| 37 | 7718517 |
| 38 | 12252381 |
| 39 | 19449443 |
| 40 | 30874065 |
[0,1,1,2,2,4,5,8,12,19,30,47,75,118,188,297,472, 748,1188,1885,2992,4749,7538,11966,18994,30151, 47861,75975,120602,191444,303898,482408,765774, 1215591,1929629,3063096,4862361,7718517,12252381, 19449443,30874065] |