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 | 5 |
| 3 | 10 |
| 4 | 47 |
| 5 | 131 |
| 6 | 71 |
| 7 | 353 |
| 8 | 1487 |
| 9 | 6989 |
| 10 | 1451 |
| 11 | 82451 |
| 12 | 42433 |
| 13 | 1132133 |
| 14 | 1158863 |
| 15 | 236749 |
| 16 | 4828073 |
| 17 | 41781863 |
| 18 | 42482563 |
| 19 | 273253759 |
| 20 | 277235737 |
| 21 | 56204647 |
| 22 | 18975625 |
| 23 | 441730115 |
| 24 | 670193263 |
| 25 | 33874048171 |
| 26 | 34224132367 |
| 27 | 311048966203 |
| 28 | 313970420453 |