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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 14 |
| 3 | 32 |
| 4 | 63 |
| 5 | 114 |
| 6 | 199 |
| 7 | 339 |
| 8 | 567 |
| 9 | 937 |
| 10 | 1538 |
| 11 | 2513 |
| 12 | 4092 |
| 13 | 6648 |
| 14 | 10786 |
| 15 | 17483 |
| 16 | 28320 |
| 17 | 45856 |
| 18 | 74231 |
| 19 | 120145 |
| 20 | 194438 |
| 21 | 314648 |
| 22 | 509153 |
| 23 | 823870 |
| 24 | 1333094 |
| 25 | 2157038 |
| 26 | 3490209 |
| 27 | 5647326 |
| 28 | 9137617 |
[4,14,32,63,114,199,339,567,937,1538,2513,4092, 6648,10786,17483,28320,45856,74231,120145,194438, 314648,509153,823870,1333094,2157038,3490209, 5647326,9137617] |