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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 19 |
| 3 | 73 |
| 4 | 163 |
| 5 | 487 |
| 6 | 1459 |
| 7 | 2593 |
| 8 | 17497 |
| 9 | 39367 |
| 10 | 52489 |
| 11 | 71119 |
| 12 | 80191 |
| 13 | 87211 |
| 14 | 97687 |
| 15 | 135433 |
| 16 | 139483 |
| 17 | 209953 |
| 18 | 262657 |
| 19 | 379081 |
[7,19,73,163,487,1459,2593,17497,39367,52489, 71119,80191,87211,97687,135433,139483,209953, 262657,379081] |