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 | 4 |
| 3 | 76 |
| 4 | 134 |
| 5 | 213 |
| 6 | 1649 |
| 7 | 1955 |
| 8 | 2041 |
| 9 | 32363 |
| 10 | 217167 |
| 11 | 760577 |
| 12 | 1633080 |
| 13 | 6412486 |
| 14 | 24932290 |
| 15 | 25544312 |
| 16 | 376841489 |
| 17 | 426956719 |
| 18 | 472747939 |
| 19 | 765965856 |
| 20 | 2708004694 |
| 21 | 5814287795 |
| 22 | 14630348817 |
| 23 | 21857959576 |
| 24 | 92077240148 |
| 25 | 184486528542 |