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 | 2 |
| 2 | 104 |
| 3 | 111712 |
| 4 | 2688307514 |
| 5 | 1445778936756068 |
| 6 | 17337631013706758184626 |
| 7 | 4628650743368437273677525554148 |
| 8 | 27478778338807945303765092195103685118924 |