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 | 3 |
| 3 | 11 |
| 4 | 13 |
| 5 | 36 |
| 6 | 1386 |
| 7 | 1411 |
| 8 | 1543 |
| 9 | 438433 |
| 10 | 445241 |
| 11 | 5685366 |
| 12 | 19849388 |
| 13 | 36385963 |
| 14 | 154671711 |
| 15 | 199808366 |
| 16 | 1408518133 |
| 17 | 3497461911 |
| 18 | 184180138433 |
| 19 | 1350308625456 |
| 20 | 4892835517288 |
| 21 | 11505747426366 |
| 22 | 118253893522536 |
| 23 | 447137831091711 |