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 | 11 |
| 2 | 1013 |
| 3 | 16369 |
| 4 | 65519 |
| 5 | 67108837 |
| 6 | 1125899906842573 |
| 7 | 72057594037927879 |
| 8 | 1180591620717411303353 |
| 9 | 83076749736557242056487941267521419 |