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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 19 |
| 3 | 3997 |
| 4 | 15292153 |
| 5 | 1274403730688 |
| 6 | 2561606354507677872 |
| 7 | 132653831108423573746282961 |
| 8 | 185588704806236441807500779350272919 |
| 9 | 7271336250750488290453701705473754841288395525 |
| 10 | 8205182525221704785195056768847594152799767482152756236799 |
[0,1,19,3997,15292153,1274403730688, 2561606354507677872,132653831108423573746282961, 185588704806236441807500779350272919, 7271336250750488290453701705473754841288395525, 82051825252217047851950567688475941527997674821527\ 56236799] |