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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 7 |
| 3 | 12 |
| 4 | 19 |
| 5 | 28 |
| 6 | 43 |
| 7 | 65 |
| 8 | 100 |
| 9 | 156 |
| 10 | 247 |
| 11 | 392 |
| 12 | 626 |
| 13 | 1004 |
| 14 | 1615 |
| 15 | 2603 |
| 16 | 4201 |
| 17 | 6787 |
| 18 | 10969 |
| 19 | 17735 |
| 20 | 28682 |
| 21 | 46394 |
| 22 | 75052 |
| 23 | 121421 |
| 24 | 196447 |
| 25 | 317841 |
| 26 | 514260 |
| 27 | 832072 |
| 28 | 1346302 |
| 29 | 2178344 |
| 30 | 3524614 |
| 31 | 5702924 |
| 32 | 9227503 |
[4,7,12,19,28,43,65,100,156,247,392,626,1004,1615, 2603,4201,6787,10969,17735,28682,46394,75052, 121421,196447,317841,514260,832072,1346302, 2178344,3524614,5702924,9227503] |