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 | 11 |
| 3 | 223 |
| 4 | 227 |
| 5 | 491 |
| 6 | 499 |
| 7 | 503 |
| 8 | 36607 |
| 9 | 39703 |
| 10 | 183283 |
| 11 | 241727 |
| 12 | 241739 |
| 13 | 241771 |
| 14 | 9177607 |
| 15 | 9177611 |
| 16 | 95949631 |
| 17 | 105639463 |
| 18 | 341118731 |
| 19 | 727335359 |
| 20 | 727335379 |
| 21 | 1786054619 |
| 22 | 1786054631 |
| 23 | 22964264759 |
| 24 | 54870713999 |
| 25 | 79263248759 |