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 | 7 |
| 2 | 112 |
| 3 | 1344 |
| 4 | 14336 |
| 5 | 143360 |
| 6 | 1376256 |
| 7 | 12845056 |
| 8 | 117440512 |
| 9 | 1056964608 |
| 10 | 9395240960 |
| 11 | 82678120448 |
| 12 | 721554505728 |
| 13 | 6253472382976 |
| 14 | 53876069761024 |
| 15 | 461794883665920 |
| 16 | 3940649673949184 |
| 17 | 33495522228568064 |
| 18 | 283726776524341248 |
| 19 | 2395915001761103872 |
| 20 | 20176126330619822080 |