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 | 19 |
| 2 | 89 |
| 3 | 271 |
| 4 | 4159 |
| 5 | 10099 |
| 6 | 20879 |
| 7 | 28729 |
| 8 | 38611 |
| 9 | 50849 |
| 10 | 130681 |
| 11 | 391249 |
| 12 | 457651 |
| 13 | 1049599 |
| 14 | 1187009 |
| 15 | 1501849 |
| 16 | 1875529 |
| 17 | 3113459 |
| 18 | 3420649 |
| 19 | 3750031 |
| 20 | 4102649 |
| 21 | 6767801 |
| 22 | 7893289 |
| 23 | 9837631 |
| 24 | 10559249 |
| 25 | 11319859 |
| 26 | 14780179 |
| 27 | 17854849 |
| 28 | 21385999 |
| 29 | 31646249 |