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 | 1 |
| 2 | 30517578125 |
| 3 | 4728272809 |
| 4 | 14042552597 |
| 5 | 5475208593 |
| 6 | 22652899805 |
| 7 | 14780701625 |
| 8 | 12079957477 |
| 9 | 33211157537 |
| 10 | 21459834669 |
| 11 | 11626649801 |
| 12 | 22641538997 |
| 13 | 32099503025 |
| 14 | 31057406333 |
| 15 | 28470525657 |
| 16 | 2272198277 |
| 17 | 31308848193 |
| 18 | 23703460045 |
| 19 | 6636903913 |
| 20 | 5151124053 |
| 21 | 2502905297 |