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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 144 |
| 3 | 2268 |
| 4 | 18688 |
| 5 | 78750 |
| 6 | 326592 |
| 7 | 825944 |
| 8 | 2396160 |
| 9 | 4966677 |
| 10 | 11340000 |
| 11 | 19501812 |
| 12 | 42384384 |
| 13 | 62777078 |
| 14 | 118935936 |
| 15 | 178605000 |
| 16 | 306774016 |
| 17 | 410422194 |
| 18 | 715201488 |
| 19 | 894002060 |
| 20 | 1471680000 |
| 21 | 1873240992 |
| 22 | 2808260928 |
| 23 | 3405105288 |
| 24 | 5434490880 |
| 25 | 6152734375 |
| 26 | 9039899232 |