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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 17 |
| 5 | 37 |
| 6 | 48 |
| 7 | 237 |
| 8 | 420 |
| 9 | 599 |
| 10 | 615 |
| 11 | 6638 |
| 12 | 13885 |
| 13 | 13886 |
| 14 | 62963 |
| 15 | 1063942 |
| 16 | 9479731 |
[1,2,3,17,37,48,237,420,599,615,6638,13885,13886, 62963,1063942,9479731] |