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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 576 |
| 3 | 29618 |
| 4 | 1787448 |
| 5 | 110423366 |
| 6 | 6768331956 |
| 7 | 415065958262 |
| 8 | 25457364392092 |
| 9 | 1561331948614650 |
| 10 | 95758535202463608 |
| 11 | 5873000943820258566 |
| 12 | 360199070693628458512 |
| 13 | 22091494902203014065954 |
| 14 | 1354901188204245617173920 |
[0,576,29618,1787448,110423366,6768331956, 415065958262,25457364392092,1561331948614650, 95758535202463608,5873000943820258566, 360199070693628458512,22091494902203014065954, 1354901188204245617173920] |