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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 8 |
| 2 | 1372 |
| 3 | 263640 |
| 4 | 51109688 |
| 5 | 9914526952 |
| 6 | 1923360309780 |
| 7 | 373121890730168 |
| 8 | 72383722120389232 |
| 9 | 14042068951066270920 |
| 10 | 2724088992528477983948 |
| 11 | 528459222478004446530712 |
| 12 | 102518365071690621381979560 |
[0,8,1372,263640,51109688,9914526952, 1923360309780,373121890730168,72383722120389232, 14042068951066270920,2724088992528477983948, 528459222478004446530712, 102518365071690621381979560] |