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) |
|---|---|
| 0 | 3 |
| 1 | 443 |
| 2 | 8483 |
| 3 | 44283 |
| 4 | 141443 |
| 5 | 347003 |
| 6 | 721443 |
| 7 | 1338683 |
| 8 | 2286083 |
| 9 | 3664443 |
| 10 | 5588003 |
| 11 | 8184443 |
| 12 | 11594883 |
| 13 | 15973883 |
| 14 | 21489443 |
| 15 | 28323003 |
| 16 | 36669443 |
| 17 | 46737083 |
| 18 | 58747683 |
| 19 | 72936443 |
| 20 | 89552003 |
| 21 | 108856443 |
| 22 | 131125283 |
| 23 | 156647483 |
| 24 | 185725443 |
| 25 | 218675003 |
| 26 | 255825443 |