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) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 211 |
| 4 | 3211 |
| 5 | 53211 |
| 6 | 853211 |
| 7 | 13853211 |
| 8 | 223853211 |
| 9 | 3623853211 |
| 10 | 58623853211 |
| 11 | 948623853211 |
| 12 | 15348623853211 |
| 13 | 248348623853211 |
| 14 | 4018348623853211 |
| 15 | 65018348623853211 |
| 16 | 1052018348623853211 |
| 17 | 17022018348623853211 |
| 18 | 275422018348623853211 |
| 19 | 4456422018348623853211 |