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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 10 |
| 3 | 51 |
| 4 | 189 |
| 5 | 227 |
| 6 | 356 |
| 7 | 578 |
| 8 | 677 |
| 9 | 996 |
| 10 | 3389 |
| 11 | 38997 |
| 12 | 69096 |
| 13 | 149462 |
| 14 | 2208495 |
| 15 | 3459604 |
| 16 | 4952236 |
| 17 | 6710605 |
| 18 | 48098656 |
| 19 | 81762222 |
| 20 | 419495413 |
[3,10,51,189,227,356,578,677,996,3389,38997,69096, 149462,2208495,3459604,4952236,6710605,48098656, 81762222,419495413] |