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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 12 |
| 3 | 198 |
| 4 | 16962 |
| 5 | 6762210 |
| 6 | 11473594848 |
| 7 | 80455865485692 |
| 8 | 2306084412391039038 |
| 9 | 268657100633050977422322 |
| 10 | 126765866001055606588876061400 |
| 11 | 241678197713843578271875740922972788 |
| 12 | 1858396158245858742065123341776166504084452 |
[1,3,12,198,16962,6762210,11473594848, 80455865485692,2306084412391039038, 268657100633050977422322, 126765866001055606588876061400, 241678197713843578271875740922972788, 1858396158245858742065123341776166504084452] |