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 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 3 |
| 5 | 17 |
| 6 | 11 |
| 7 | 23 |
| 8 | 89 |
| 9 | 271 |
| 10 | 457 |
| 11 | 967 |
| 12 | 4049 |
| 13 | 181 |
| 14 | 8641 |
| 15 | 7193 |
| 16 | 2603047 |
| 17 | 68476319 |
| 18 | 335257649 |
| 19 | 5554901257 |
| 20 | 31797598073 |
| 21 | 23369856751 |
| 22 | 77031318395801969 |
| 23 | 3293187233103900007 |
| 24 | 637758902554659731714245315207 |