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) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 125 |
| 5 | 625 |
| 6 | 3125 |
| 7 | 15625 |
| 8 | 78125 |
| 9 | 1953125 |
| 10 | 9765625 |
| 11 | 48828125 |
| 12 | 762939453125 |
| 13 | 3814697265625 |
| 14 | 931322574615478515625 |
| 15 | 116415321826934814453125 |
| 16 | 34694469519536141888238489627838134765625 |