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 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 8 |
| 6 | 12 |
| 7 | 13 |
| 8 | 3138 |
| 9 | 3142 |
| 10 | 3146 |
| 11 | 3147 |
| 12 | 6272 |
| 13 | 6273 |
| 14 | 6277 |
| 15 | 6278 |
| 16 | 11112006825564294 |
| 17 | 11112006825564295 |
| 18 | 11112006825567420 |
| 19 | 11112006825567421 |
| 20 | 11112006825570546 |
| 21 | 11112006825570550 |
| 22 | 11112006825570554 |
| 23 | 11112006825570555 |
| 24 | 449005897206429930 |
| 25 | 449005897206429934 |