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 | 456 |
| 2 | 828 |
| 3 | 7584 |
| 4 | 33462 |
| 5 | 1596048 |
| 6 | 1964544 |
| 7 | 19800384 |
| 8 | 26211264 |
| 9 | 31451136 |
| 10 | 106805184 |
| 11 | 156868224 |
| 12 | 316113024 |
| 13 | 502349274 |
| 14 | 503291904 |
| 15 | 1557940992 |
| 16 | 8024671392 |
| 17 | 8052965376 |
| 18 | 11697091872 |
| 19 | 22149447168 |
| 20 | 87877745664 |
| 21 | 443520605184 |
| 22 | 626058783744 |