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 | 26 |
| 2 | 256 |
| 3 | 2472 |
| 4 | 25056 |
| 5 | 250016 |
| 6 | 2499456 |
| 7 | 25002112 |
| 8 | 249995776 |
| 9 | 2500000256 |
| 10 | 25000032256 |
| 11 | 249999869952 |
| 12 | 2500000260096 |
| 13 | 25000000004096 |
| 14 | 249999997894656 |
| 15 | 2500000008404992 |
| 16 | 24999999983190016 |
| 17 | 250000000000065536 |
| 18 | 2500000000134086656 |
| 19 | 24999999999463391232 |