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 | 7 |
| 2 | 30 |
| 3 | 64 |
| 4 | 42753 |
| 5 | 57241 |
| 6 | 75423 |
| 7 | 425072 |
| 8 | 574922 |
| 9 | 979528 |
| 10 | 4301393 |
| 11 | 5698601 |
| 12 | 7028666 |
| 13 | 4925000747 |
| 14 | 5074999247 |
| 15 | 7748266574 |
| 16 | 8511881484 |
| 17 | 8814851184 |
| 18 | 7059602159672 |
| 19 | 7106167933828 |
| 20 | 7439286611621 |
| 21 | 7485852385777 |