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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 13 |
| 6 | 14 |
| 7 | 76 |
| 8 | 237 |
| 9 | 872 |
| 10 | 988 |
| 11 | 1280 |
| 12 | 1370 |
| 13 | 2686 |
| 14 | 3612 |
| 15 | 4051 |
| 16 | 4645 |
| 17 | 9162 |
| 18 | 10856 |
| 19 | 25959 |
| 20 | 64882 |
| 21 | 144220 |
| 22 | 153746 |
| 23 | 185930 |
[1,2,3,4,13,14,76,237,872,988,1280,1370,2686,3612, 4051,4645,9162,10856,25959,64882,144220,153746, 185930] |