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 | 11258613 |
| 2 | 280102672 |
| 3 | 4527262140 |
| 4 | 55707179395 |
| 5 | 558643720724 |
| 6 | 4754203179765 |
| 7 | 35285910378578 |
| 8 | 232998389350277 |
| 9 | 1389861134920751 |
| 10 | 7581135805604097 |
| 11 | 38188894333159149 |
| 12 | 179116588954318878 |
| 13 | 787613147423182292 |