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 | 12405 |
| 2 | 260235 |
| 3 | 2273505 |
| 4 | 12775065 |
| 5 | 52968495 |
| 6 | 178881705 |
| 7 | 514370175 |
| 8 | 1311704565 |
| 9 | 3033506835 |
| 10 | 6484756785 |