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 | 22 |
| 3 | 23 |
| 4 | 24 |
| 5 | 266 |
| 6 | 267 |
| 7 | 268 |
| 8 | 2712 |
| 9 | 2713 |
| 10 | 27175 |
| 11 | 27176 |
| 12 | 271819 |
| 13 | 271820 |
| 14 | 271821 |
| 15 | 2718272 |
| 16 | 2718273 |
| 17 | 27182807 |
| 18 | 27182808 |
| 19 | 271828170 |
| 20 | 271828171 |
| 21 | 271828172 |