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 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 5 |
| 6 | 43 |
| 7 | 1 |
| 8 | 15 |
| 9 | 463 |
| 10 | 16372 |
| 11 | 1 |
| 12 | 50 |
| 13 | 5193 |
| 14 | 583199 |
| 15 | 65485654 |
| 16 | 1 |
| 17 | 175 |
| 18 | 58653 |
| 19 | 20788249 |
| 20 | 7354266811 |
| 21 | 2602065897364 |
| 22 | 1 |
| 23 | 625 |
| 24 | 663203 |
| 25 | 741026781 |
| 26 | 825905301851 |