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) |
|---|---|
| 4 | 1 |
| 5 | 9091 |
| 6 | 91828191 |
| 7 | 917364637191 |
| 8 | 9174563736547191 |
| 9 | 91744720010017447191 |
| 10 | 917448117456547208447191 |
| 11 | 9174480257209191175298447191 |
| 12 | 91744803489448201844894398447191 |