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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2097152 |
| 3 | 10460353203 |
| 4 | 4398046511104 |
| 5 | 476837158203125 |
| 6 | 21936950640377856 |
| 7 | 558545864083284007 |
| 8 | 9223372036854775808 |
| 9 | 109418989131512359209 |
| 10 | 1000000000000000000000 |
| 11 | 7400249944258160101211 |
[0,1,2097152,10460353203,4398046511104, 476837158203125,21936950640377856, 558545864083284007,9223372036854775808, 109418989131512359209,1000000000000000000000, 7400249944258160101211] |