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 | 9 |
| 3 | 82 |
| 4 | 207 |
| 5 | 70021 |
| 6 | 11937681 |
| 7 | 1867379174326 |
| 8 | 623471971900739499585 |
| 9 | 5859949370091168271294333980238096 |
| 10 | 6908320893334921728606040790129494417723642675198936230 |