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 | 1 |
| 1 | 5 |
| 2 | 25 |
| 3 | 125 |
| 4 | 15625 |
| 5 | 244140625 |
| 6 | 59604644775390625 |
| 7 | 3552713678800500929355621337890625 |
| 8 | 12621774483536188886587657044524579674771302961744368076324462890625 |