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 | 87249 |
| 2 | 831405 |
| 3 | 1489665 |
| 4 | 2113665 |
| 5 | 31880577 |
| 6 | 81612105 |
| 7 | 84028407 |
| 8 | 86559045 |
| 9 | 274014885 |
| 10 | 1778357505 |
| 11 | 1853263365 |
| 12 | 2276082537 |
| 13 | 9090685605 |
| 14 | 12300409857 |
| 15 | 43620860865 |
| 16 | 69654751377 |
| 17 | 248342283645 |
| 18 | 634038307449 |
| 19 | 848282877345 |
| 20 | 1123296404385 |
| 21 | 1344952805505 |
| 22 | 3307428792777 |