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 | 2 |
| 2 | 5 |
| 3 | 7 |
| 4 | 7 |
| 5 | 79 |
| 6 | 79 |
| 7 | 345431 |
| 8 | 21171649 |
| 9 | 34640153 |
| 10 | 4174239239 |
| 11 | 268130051191 |
| 12 | 268130051191 |
| 13 | 253134809926049 |
| 14 | 253134809926049 |
| 15 | 253134809926049 |