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 | 641 |
| 2 | 656597 |
| 3 | 6212357 |
| 4 | 18958567877 |
| 5 | 287468425241 |
| 6 | 626160901277 |
| 7 | 634038307447 |
| 8 | 1395494019917 |
| 9 | 1925525109197 |
| 10 | 1960708164797 |
| 11 | 1962378065897 |
| 12 | 1977370759361 |
| 13 | 2788325761547 |
| 14 | 3032013857177 |
| 15 | 4846359321103 |
| 16 | 6877227801077 |
| 17 | 11927878640383 |
| 18 | 20835183400303 |
| 19 | 22298617759877 |