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| n | a(n) |
|---|---|
| 1 | 33 |
| 2 | 90 |
| 3 | 311 |
| 4 | 1096 |
| 5 | 4138 |
| 6 | 16384 |
| 7 | 67189 |
| 8 | 280852 |
| 9 | 1195147 |
| 10 | 5145988 |
| 11 | 22393436 |
| 12 | 98203218 |
| 13 | 433447413 |
| 14 | 1922772634 |
| 15 | 8563359553 |
| 16 | 38258390042 |
| 17 | 171345914564 |
| 18 | 768880010838 |
| 19 | 3455375274145 |
| 20 | 15546790384874 |
| 21 | 70013535581867 |
[33,90,311,1096,4138,16384,67189,280852,1195147, 5145988,22393436,98203218,433447413,1922772634, 8563359553,38258390042,171345914564,768880010838, 3455375274145,15546790384874,70013535581867] |