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 | 73 |
| 2 | 97 |
| 3 | 233 |
| 4 | 277 |
| 5 | 349 |
| 6 | 353 |
| 7 | 613 |
| 8 | 821 |
| 9 | 877 |
| 10 | 1181 |
| 11 | 1277 |
| 12 | 1613 |
| 13 | 1637 |
| 14 | 1693 |
| 15 | 2357 |
| 16 | 3557 |
| 17 | 3989 |
| 18 | 4157 |
| 19 | 4517 |
| 20 | 7213 |
| 21 | 11213 |