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 | 3 |
| 3 | 3 |
| 4 | 7 |
| 5 | 43 |
| 6 | 19 |
| 7 | 13 |
| 8 | 5 |
| 9 | 571 |
| 10 | 3 |
| 11 | 137 |
| 12 | 59 |
| 13 | 3823 |
| 14 | 2707 |
| 15 | 6277 |
| 16 | 1063 |
| 17 | 4523 |
| 18 | 631 |
| 19 | 8209 |
| 20 | 34537 |
| 21 | 102329 |
| 22 | 46399 |
| 23 | 30323 |
| 24 | 18803 |
| 25 | 1063 |
| 26 | 21019 |