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 | 2 |
| 3 | 3 |
| 4 | 11 |
| 5 | 127 |
| 6 | 16195 |
| 7 | 262286407 |
| 8 | 68794159432716139 |
| 9 | 4732636372053966959311918076028751 |
| 10 | 22397847030088134373054567592093233271179679420451463713205492138771 |