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 | 199 |
| 3 | 251 |
| 4 | 20809 |
| 5 | 18839 |
| 6 | 12829 |
| 7 | 158867 |
| 8 | 156733 |
| 9 | 74453 |
| 10 | 83477 |
| 11 | 1736281 |
| 12 | 1397609 |
| 13 | 17702303 |
| 14 | 10531373 |
| 15 | 642427 |
| 16 | 58880711 |
| 17 | 120520087 |
| 18 | 5321191 |
| 19 | 304115129 |
| 20 | 31824769 |
| 21 | 5412049 |
| 22 | 125954987 |
| 23 | 188966023 |
| 24 | 55410683 |
| 25 | 162282233 |
| 26 | 958613011 |
| 27 | 400948369 |
| 28 | 373978313 |
| 29 | 3298545589 |
| 30 | 253444777 |