This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 262144 |
| 3 | 387420489 |
| 4 | 68719476736 |
| 5 | 3814697265625 |
| 6 | 101559956668416 |
| 7 | 1628413597910449 |
| 8 | 18014398509481984 |
| 9 | 150094635296999121 |
| 10 | 1000000000000000000 |
| 11 | 5559917313492231481 |
| 12 | 26623333280885243904 |