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 | 3 |
| 2 | 5 |
| 3 | 13 |
| 4 | 73 |
| 5 | 241 |
| 6 | 241 |
| 7 | 2521 |
| 8 | 3361 |
| 9 | 15121 |
| 10 | 15121 |
| 11 | 55441 |
| 12 | 55441 |
| 13 | 4324321 |
| 14 | 4324321 |
| 15 | 4324321 |
| 16 | 4324321 |
| 17 | 196035841 |
| 18 | 196035841 |
| 19 | 1862340481 |
| 20 | 1862340481 |
| 21 | 1862340481 |
| 22 | 1862340481 |
| 23 | 10708457761 |
| 24 | 10708457761 |
| 25 | 214169155201 |
| 26 | 214169155201 |