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 | 13 |
| 2 | 131 |
| 3 | 1319 |
| 4 | 13217 |
| 5 | 132173 |
| 6 | 1321753 |
| 7 | 13217531 |
| 8 | 132175313 |
| 9 | 1321753177 |
| 10 | 13217531771 |
| 11 | 132175317727 |
| 12 | 1321753177271 |
| 13 | 13217531772769 |
| 14 | 132175317727727 |
| 15 | 1321753177277287 |
| 16 | 13217531772772933 |
| 17 | 132175317727729369 |