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 | 1 |
| 2 | 4182 |
| 3 | 4879 |
| 4 | 122664360 |
| 5 | 315870765 |
| 6 | 4621320120 |
| 7 | 5006430130 |
| 8 | 20245909880 |
| 9 | 220899101736 |
| 10 | 239307360214 |
| 11 | 812593845485 |