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 | 0 |
| 2 | 3 |
| 3 | 44 |
| 4 | 65 |
| 5 | 83 |
| 6 | 373 |
| 7 | 575 |
| 8 | 1126 |
| 9 | 12673 |
| 10 | 25670 |
| 11 | 30268 |
| 12 | 30525 |
| 13 | 40691 |
| 14 | 48240964 |
| 15 | 63327632 |
| 16 | 298506737 |
| 17 | 369490840 |
| 18 | 1113434519 |
| 19 | 1647703600 |
| 20 | 4958115803 |
| 21 | 64657664035 |
| 22 | 86155378906 |
| 23 | 184280298746 |
| 24 | 400812644253 |
| 25 | 411723964986 |
| 26 | 714853066875 |
| 27 | 1627993432495 |
| 28 | 2607864795784 |