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) |
|---|---|
| 3 | 66 |
| 4 | 44100 |
| 5 | 11310 |
| 6 | 103740 |
| 7 | 3333330 |
| 8 | 185040240 |
| 9 | 15529888374 |
| 10 | 626141842326 |
| 11 | 21647593547580 |
| 12 | 351877410344460 |
| 13 | 82634328555218440 |
| 14 | 2383985537862979050 |
| 15 | 239213805711830629680 |