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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 84 |
| 4 | 165 |
| 5 | 274 |
| 6 | 513 |
| 7 | 3372 |
| 8 | 4177 |
| 9 | 4318 |
| 10 | 10579 |
| 11 | 17221 |
| 12 | 19672 |
| 13 | 20065 |
| 14 | 36646 |
| 15 | 40191 |
| 16 | 55359 |
| 17 | 86230 |
[1,4,84,165,274,513,3372,4177,4318,10579,17221, 19672,20065,36646,40191,55359,86230] |