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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 2 |
| 8 | 6 |
| 9 | 7 |
| 10 | 11 |
| 11 | 23 |
| 12 | 54 |
| 13 | 60 |
| 14 | 238 |
| 15 | 445 |
| 16 | 901 |
| 17 | 2706 |
| 18 | 9076 |
| 19 | 14494 |
| 20 | 80321 |
| 21 | 212453 |
| 22 | 613603 |
| 23 | 2681494 |
| 24 | 12847248 |
| 25 | 29154102 |
| 26 | 230660451 |
| 27 | 862931932 |
| 28 | 3568146072 |
| 29 | 22105400251 |
| 30 | 150948368093 |
| 31 | 488469303948 |
| 32 | 5510650176739 |
| 33 | 29467826406958 |
[1,1,1,1,1,2,3,2,6,7,11,23,54,60,238,445,901,2706, 9076,14494,80321,212453,613603,2681494,12847248, 29154102,230660451,862931932,3568146072, 22105400251,150948368093,488469303948, 5510650176739,29467826406958] |