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) |
|---|---|
| 3 | 163 |
| 4 | 4719 |
| 5 | 64966 |
| 6 | 610166 |
| 7 | 4546137 |
| 8 | 29120349 |
| 9 | 168301828 |
| 10 | 905468700 |
| 11 | 4631682463 |
| 12 | 22861603067 |
| 13 | 110036539458 |
| 14 | 520325868354 |
| 15 | 2430026294149 |
| 16 | 11249283423801 |
| 17 | 51745956440320 |
| 18 | 236889852817832 |
| 19 | 1080311924210379 |
| 20 | 4910417209821015 |
| 21 | 22252163061096190 |
| 22 | 100544806298594190 |