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) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 5 |
| 3 | 43 |
| 4 | 1201 |
| 5 | 191 |
| 6 | 181 |
| 7 | 911 |
| 8 | 169553 |
| 9 | 117307 |
| 10 | 4021 |
| 11 | 10746341 |
| 12 | 1201 |
| 13 | 228511817 |
| 14 | 13564461457 |
| 15 | 6568801 |
| 16 | 47072139617 |
| 17 | 29078814248401 |
| 18 | 13841169553 |
| 19 | 4058036683 |
| 20 | 810221830361 |
| 21 | 309079 |
| 22 | 83960385389 |
| 23 | 3421093417510114543 |
| 24 | 33232924804801 |
| 25 | 79787519018560501 |