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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 4 |
| 5 | 11 |
| 6 | 16 |
| 7 | 31 |
| 8 | 93 |
| 9 | 109 |
| 10 | 277 |
| 11 | 541 |
| 12 | 829 |
| 13 | 1621 |
| 14 | 2971 |
| 15 | 4861 |
| 16 | 14583 |
| 17 | 26737 |
| 18 | 67129 |
| 19 | 80209 |
| 20 | 240627 |
| 21 | 481246 |
| 22 | 721891 |
| 23 | 2165673 |
| 24 | 2165671 |
| 25 | 6497013 |
[1,2,5,4,11,16,31,93,109,277,541,829,1621,2971, 4861,14583,26737,67129,80209,240627,481246,721891, 2165673,2165671,6497013] |