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 | 286330897 |
| 2 | 286330943 |
| 3 | 388098901 |
| 4 | 955201943 |
| 5 | 1776186851 |
| 6 | 1854778853 |
| 7 | 2559495863 |
| 8 | 2647782901 |
| 9 | 3517793911 |
| 10 | 3628857863 |
| 11 | 3866728909 |
| 12 | 3974453911 |
| 13 | 4167637819 |
| 14 | 4269837799 |
| 15 | 5083007887 |
| 16 | 5362197829 |
| 17 | 5642510933 |
| 18 | 6034811933 |
| 19 | 8180784851 |
| 20 | 8214319903 |