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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 333 |
| 8 | 17571 |
| 9 | 1757571 |
| 10 | 1787871 |
| 11 | 2249422 |
| 12 | 4369634 |
| 13 | 5136315 |
| 14 | 412727214 |
| 15 | 439838934 |
| 16 | 518686815 |
| 17 | 541626145 |
| 18 | 17575757571 |
| 19 | 52554845525 |
| 20 | 4166253526614 |
| 21 | 5136813186315 |
| 22 | 5136868686315 |
| 23 | 5806270726085 |
| 24 | 7359770779537 |
| 25 | 172757272757271 |
| 26 | 513636363636315 |