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) |
|---|---|
| 2 | 3 |
| 3 | 37 |
| 4 | 169 |
| 5 | 4549 |
| 6 | 4769 |
| 7 | 241481 |
| 8 | 989549 |
| 9 | 9072541 |
| 10 | 1841321 |
| 11 | 225467009 |
| 12 | 227698469 |
| 13 | 38801207261 |
| 14 | 39076419341 |
| 15 | 196577627041 |
| 16 | 790503882349 |
| 17 | 229526961468061 |
| 18 | 230480866420061 |
| 19 | 83512167402400421 |
| 20 | 3351610394325821 |