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 | 1 |
| 2 | 11 |
| 3 | 71 |
| 4 | 637319 |
| 5 | 637323 |
| 6 | 637327 |
| 7 | 179993015 |
| 8 | 1208198861 |
| 9 | 8179002163 |
| 10 | 8179002189 |
| 11 | 55762149067 |
| 12 | 55762149103 |
| 13 | 6201265271239787 |
| 14 | 43525513764814971 |
| 15 | 43525513764815121 |
| 16 | 2159986889494444325 |
| 17 | 2159986889494445481 |
| 18 | 2159986889494445499 |
| 19 | 2159986889494447181 |