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| n | a(n) |
|---|---|
| 1 | 1148 |
| 2 | 4416 |
| 3 | 16580 |
| 4 | 69336 |
| 5 | 281612 |
| 6 | 1253088 |
| 7 | 5385236 |
| 8 | 25119456 |
| 9 | 112545548 |
| 10 | 544181136 |
| 11 | 2514628340 |
| 12 | 12495760896 |
| 13 | 59077785452 |
| 14 | 299739293328 |
| 15 | 1441310414996 |
| 16 | 7429688790336 |
| 17 | 36177693563468 |
| 18 | 188779231755216 |
| 19 | 927888726542900 |
[1148,4416,16580,69336,281612,1253088,5385236, 25119456,112545548,544181136,2514628340, 12495760896,59077785452,299739293328, 1441310414996,7429688790336,36177693563468, 188779231755216,927888726542900] |