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 | 842 |
| 2 | 842 |
| 3 | 842 |
| 4 | 842 |
| 5 | 843 |
| 6 | 1444 |
| 7 | 5169 |
| 8 | 15961 |
| 9 | 45612 |
| 10 | 363035 |
| 11 | 363036 |
| 12 | 364472 |
| 13 | 368073 |
| 14 | 403471 |
| 15 | 403489 |
| 16 | 403489 |
| 17 | 403490 |
| 18 | 403494 |
| 19 | 403585 |
| 20 | 404089 |
| 21 | 404172 |
| 22 | 725931 |
| 23 | 730924 |