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 | 3 |
| 2 | 43 |
| 3 | 59 |
| 4 | 191 |
| 5 | 223 |
| 6 | 349 |
| 7 | 563 |
| 8 | 709 |
| 9 | 743 |
| 10 | 1663 |
| 11 | 5471 |
| 12 | 17707 |
| 13 | 19609 |
| 14 | 35449 |
| 15 | 36697 |
| 16 | 45259 |
| 17 | 91493 |
| 18 | 246497 |
| 19 | 265007 |
| 20 | 289937 |