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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 64554 |
| 3 | 47862876 |
| 4 | 51426223446 |
| 5 | 50887086987153 |
| 6 | 51602303242460441 |
| 7 | 52114841233680255776 |
| 8 | 52723822292058373369892 |
| 9 | 53334566247423719719274768 |
| 10 | 53960411851826546879505032814 |
| 11 | 54594452516600107067153896876896 |
[21,64554,47862876,51426223446,50887086987153, 51602303242460441,52114841233680255776, 52723822292058373369892, 53334566247423719719274768, 53960411851826546879505032814, 54594452516600107067153896876896] |