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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 11 |
| 5 | 18 |
| 6 | 32 |
| 7 | 54 |
| 8 | 98 |
| 9 | 173 |
| 10 | 315 |
| 11 | 559 |
| 12 | 1008 |
| 13 | 1813 |
| 14 | 3290 |
| 15 | 5928 |
| 16 | 10716 |
| 17 | 19352 |
| 18 | 35036 |
| 19 | 63355 |
| 20 | 114651 |
| 21 | 207352 |
| 22 | 375184 |
| 23 | 678789 |
| 24 | 1228507 |
| 25 | 2222990 |
| 26 | 4022469 |
| 27 | 7278193 |
| 28 | 13171060 |
| 29 | 23835243 |
| 30 | 43132890 |
| 31 | 78050078 |
| 32 | 141238045 |
| 33 | 255588327 |
| 34 | 462524188 |
[3,4,5,11,18,32,54,98,173,315,559,1008,1813,3290, 5928,10716,19352,35036,63355,114651,207352,375184, 678789,1228507,2222990,4022469,7278193,13171060, 23835243,43132890,78050078,141238045,255588327, 462524188] |