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 | 524287 |
| 1 | 536347135 |
| 2 | 16659267087 |
| 3 | 121923751537 |
| 4 | 432270825142 |
| 5 | 1669779270546 |
| 6 | 2925034919093 |
| 7 | 13215281603292 |
| 8 | 52815987849274 |
| 9 | 211162780754599 |
| 10 | 373971566094226 |
| 11 | 1693443980145088 |
| 12 | 6773560256426439 |