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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 12 |
| 3 | 443 |
| 4 | 8489 |
| 5 | 105368 |
| 6 | 1113148 |
| 7 | 10598099 |
| 8 | 94350141 |
| 9 | 800540848 |
| 10 | 6552843938 |
| 11 | 52163574440 |
| 12 | 406096164959 |
| 13 | 3104415588852 |
| 14 | 23374506589595 |
| 15 | 173753114036173 |
| 16 | 1277461524990825 |
| 17 | 9303058981853048 |
| 18 | 67186844864693416 |
| 19 | 481669905249353054 |
[0,12,443,8489,105368,1113148,10598099,94350141, 800540848,6552843938,52163574440,406096164959, 3104415588852,23374506589595,173753114036173, 1277461524990825,9303058981853048, 67186844864693416,481669905249353054] |