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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 2 |
| 7 | 3 |
| 8 | 8 |
| 9 | 12 |
| 10 | 21 |
| 11 | 47 |
| 12 | 117 |
| 13 | 316 |
| 14 | 707 |
| 15 | 1806 |
| 16 | 4044 |
| 17 | 9736 |
| 18 | 21215 |
| 19 | 47912 |
| 20 | 104631 |
| 21 | 225418 |
| 22 | 486719 |
| 23 | 1024621 |
| 24 | 2189311 |
| 25 | 4554744 |
| 26 | 9632597 |
| 27 | 19938907 |
| 28 | 41704600 |
| 29 | 86022324 |
| 30 | 177951143 |
| 31 | 365177921 |
| 32 | 746905649 |
| 33 | 1521061254 |
| 34 | 3075578686 |
| 35 | 6201375023 |
[1,1,1,2,2,2,3,8,12,21,47,117,316,707,1806,4044, 9736,21215,47912,104631,225418,486719,1024621, 2189311,4554744,9632597,19938907,41704600, 86022324,177951143,365177921,746905649,1521061254, 3075578686,6201375023] |