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 | 1329433951 |
| 2 | 25778112821 |
| 3 | 75902670689 |
| 4 | 80358496679 |
| 5 | 84005465699 |
| 6 | 184273377289 |
| 7 | 188745495049 |
| 8 | 220260667439 |
| 9 | 225830918741 |
| 10 | 227706130541 |
| 11 | 250232659249 |
| 12 | 314987199911 |
| 13 | 396580371571 |
| 14 | 532375084669 |
| 15 | 535798256839 |
| 16 | 542604984109 |
| 17 | 634725913009 |
| 18 | 676837365821 |
| 19 | 706769028239 |