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 | 17 |
| 2 | 306 |
| 3 | 2462 |
| 4 | 7791 |
| 5 | 420662 |
| 6 | 8499558 |
| 7 | 77620598 |
| 8 | 263388703 |
| 9 | 14079281158 |
| 10 | 283246971698 |
| 11 | 2567018240138 |
| 12 | 8718190984644 |
| 13 | 468649999707545 |