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) |
|---|---|
| 0 | 8191 |
| 1 | 516223 |
| 2 | 3728271 |
| 3 | 5975219 |
| 4 | 7165269 |
| 5 | 16161302 |
| 6 | 50947772 |
| 7 | 84585318 |
| 8 | 101553934 |
| 9 | 128162681 |
| 10 | 152288542 |
| 11 | 288829357 |
| 12 | 415988810 |
| 13 | 562392274 |
| 14 | 710829887 |
| 15 | 1104970424 |
| 16 | 1584534888 |
| 17 | 2257773870 |
| 18 | 2991559250 |
| 19 | 4278801141 |