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 | 15 |
| 2 | 21 |
| 3 | 15375 |
| 4 | 25164 |
| 5 | 53361 |
| 6 | 95190 |
| 7 | 110685 |
| 8 | 115140 |
| 9 | 133701 |
| 10 | 139425 |
| 11 | 140430 |
| 12 | 140844 |
| 13 | 189336 |
| 14 | 217686 |
| 15 | 220650 |
| 16 | 266916 |
| 17 | 272469 |
| 18 | 289341 |
| 19 | 344880 |
| 20 | 364665 |
| 21 | 377805 |
| 22 | 382221 |
| 23 | 390270 |
| 24 | 415779 |
| 25 | 454905 |
| 26 | 539700 |
| 27 | 561186 |
| 28 | 567645 |
| 29 | 575799 |
| 30 | 584430 |
| 31 | 603651 |
| 32 | 722484 |