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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 81 |
| 5 | 243 |
| 6 | 4096 |
| 7 | 16384 |
| 8 | 390625 |
| 9 | 1953125 |
| 10 | 60466176 |
| 11 | 362797056 |
| 12 | 13841287201 |
| 13 | 96889010407 |
| 14 | 4398046511104 |
| 15 | 35184372088832 |
| 16 | 1853020188851841 |
| 17 | 16677181699666569 |
| 18 | 1000000000000000000 |
| 19 | 10000000000000000000 |
| 20 | 672749994932560009201 |
[1,4,8,81,243,4096,16384,390625,1953125,60466176, 362797056,13841287201,96889010407,4398046511104, 35184372088832,1853020188851841,16677181699666569, 1000000000000000000,10000000000000000000, 672749994932560009201] |