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 | 24 |
| 3 | 114 |
| 4 | 600 |
| 5 | 3361 |
| 6 | 19608 |
| 7 | 117649 |
| 8 | 720600 |
| 9 | 4483734 |
| 10 | 28247524 |
| 11 | 179756976 |
| 12 | 1153440600 |
| 13 | 7453000800 |
| 14 | 48444505203 |
| 15 | 316504100662 |
| 16 | 2077058160600 |
| 17 | 13684147881600 |
| 18 | 90467422106136 |
| 19 | 599941851861744 |
| 20 | 3989613314880600 |