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) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 97 |
| 3 | 1831 |
| 4 | 43393 |
| 5 | 1242375 |
| 6 | 41818561 |
| 7 | 1620979687 |
| 8 | 71191804801 |
| 9 | 3496805826823 |
| 10 | 190053352702753 |
| 11 | 11329044782441127 |
| 12 | 735151931535979777 |
| 13 | 51600331868857972231 |
| 14 | 3896042468112362132353 |
| 15 | 314921475287825567805799 |