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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 19 |
| 3 | 163 |
| 4 | 1459 |
| 5 | 17497 |
| 6 | 52489 |
| 7 | 87211 |
| 8 | 135433 |
| 9 | 139483 |
| 10 | 1220347 |
| 11 | 5419387 |
| 12 | 6049243 |
| 13 | 28934011 |
| 14 | 86093443 |
| 15 | 227862073 |
| 16 | 272010961 |
[3,19,163,1459,17497,52489,87211,135433,139483, 1220347,5419387,6049243,28934011,86093443, 227862073,272010961] |