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) |
|---|---|
| 2 | 50 |
| 3 | 251 |
| 4 | 259 |
| 5 | 4097 |
| 6 | 570947 |
| 7 | 73310705 |
| 8 | 647282661 |
| 9 | 79327628290 |
| 10 | 1077347903894 |
| 11 | 1761813250036143 |
| 12 | 2343908545594901 |