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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 64 |
| 3 | 7776 |
| 4 | 2097152 |
| 5 | 1000000000 |
| 6 | 743008370688 |
| 7 | 793714773254144 |
| 8 | 1152921504606846976 |
| 9 | 2185911559738696531968 |
| 10 | 5242880000000000000000000 |
| 11 | 15519448971100888972574851072 |
| 12 | 55572324035428505185378394701824 |
| 13 | 236773830007967588876795164938469376 |
[2,64,7776,2097152,1000000000,743008370688, 793714773254144,1152921504606846976, 2185911559738696531968,5242880000000000000000000, 15519448971100888972574851072, 55572324035428505185378394701824, 236773830007967588876795164938469376] |