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 | 7 |
| 3 | 23 |
| 4 | 41 |
| 5 | 71 |
| 6 | 313 |
| 7 | 643 |
| 8 | 4111 |
| 9 | 53173 |
| 10 | 107227 |
| 11 | 533821 |
| 12 | 1373989 |
| 13 | 2494381 |
| 14 | 95525767 |
| 15 | 823766851 |
| 16 | 4348468741 |
| 17 | 226547941621 |
| 18 | 596653488817 |
| 19 | 5260410488191 |