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 | 14 |
| 3 | 43 |
| 4 | 194 |
| 5 | 675 |
| 6 | 2666 |
| 7 | 9819 |
| 8 | 37382 |
| 9 | 140039 |
| 10 | 528962 |
| 11 | 1989787 |
| 12 | 7501790 |
| 13 | 28252719 |
| 14 | 106464314 |
| 15 | 401084083 |
| 16 | 1511229542 |
| 17 | 5693728487 |
| 18 | 21452605794 |
| 19 | 80826937611 |
| 20 | 304534567726 |
| 21 | 1147401249247 |
| 22 | 4323099142602 |
| 23 | 16288258059235 |
| 24 | 61369756239670 |