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 | 6 |
| 2 | 14 |
| 3 | 42 |
| 4 | 526974 |
| 5 | 9157582 |
| 6 | 21001206 |
| 7 | 49419154 |
| 8 | 156418318 |
| 9 | 157058362 |
| 10 | 223741702 |
| 11 | 467016562 |
| 12 | 531330346 |
| 13 | 601692022 |
| 14 | 681377698 |
| 15 | 888739174 |
| 16 | 931053466 |
| 17 | 1037629198 |
| 18 | 1390950926 |
| 19 | 1392718618 |
| 20 | 2175608494 |
| 21 | 2377982166 |
| 22 | 3045063946 |
| 23 | 5136468646 |