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 | 3168 |
| 3 | 33696 |
| 4 | 322056 |
| 5 | 422352 |
| 6 | 801792 |
| 7 | 3408048 |
| 8 | 13304736 |
| 9 | 24772608 |
| 10 | 26836992 |
| 11 | 31959648 |
| 12 | 43932456 |
| 13 | 98558208 |
| 14 | 152845056 |
| 15 | 238267008 |
| 16 | 250677504 |
| 17 | 362330496 |
| 18 | 413779968 |
| 19 | 511967232 |
| 20 | 567502848 |
| 21 | 646507008 |
| 22 | 1060190208 |
| 23 | 1273234464 |
| 24 | 1288514304 |
| 25 | 1503330304 |