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) |
|---|---|
| 2 | 7 |
| 3 | 19 |
| 4 | 37 |
| 5 | 549 |
| 6 | 364 |
| 7 | 12700 |
| 8 | 38025 |
| 9 | 265825 |
| 10 | 212464 |
| 11 | 21019824 |
| 12 | 17507700 |
| 13 | 2502630900 |
| 14 | 2144458800 |
| 15 | 1858077936 |
| 16 | 6501984489 |
| 17 | 1657735504425 |
| 18 | 1473342270400 |
| 19 | 475835044484800 |
| 20 | 428209840762704 |
| 21 | 387395612954064 |
| 22 | 352152440452800 |
| 23 | 170078965146417600 |
| 24 | 155897164961237700 |