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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 148 |
| 3 | 444 |
| 4 | 5401 |
| 5 | 39372 |
| 6 | 703983 |
| 7 | 14050512 |
| 8 | 523902288 |
| 9 | 17552393136 |
| 10 | 1009883277293 |
| 11 | 82740925046288 |
| 12 | 10723440611064915 |
[0,148,444,5401,39372,703983,14050512,523902288, 17552393136,1009883277293,82740925046288, 10723440611064915] |