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| n | a(n) |
|---|---|
| 1 | 13328 |
| 2 | 16900 |
| 3 | 34176 |
| 4 | 99856 |
| 5 | 296800 |
| 6 | 902500 |
| 7 | 2811104 |
| 8 | 8773444 |
| 9 | 26777920 |
| 10 | 80389156 |
| 11 | 241051180 |
| 12 | 729864256 |
| 13 | 2245069416 |
| 14 | 6937890436 |
| 15 | 21229314464 |
| 16 | 64337307904 |
| 17 | 194210751732 |
| 18 | 588215370304 |
| 19 | 1798168002120 |
| 20 | 5520328813444 |
| 21 | 16886469006088 |
[13328,16900,34176,99856,296800,902500,2811104, 8773444,26777920,80389156,241051180,729864256, 2245069416,6937890436,21229314464,64337307904, 194210751732,588215370304,1798168002120, 5520328813444,16886469006088] |