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 | 0 |
| 2 | 4 |
| 3 | 24 |
| 4 | 8064 |
| 5 | 34944 |
| 6 | 35520 |
| 7 | 38880 |
| 8 | 69480 |
| 9 | 268560 |
| 10 | 420096 |
| 11 | 1054944 |
| 12 | 2946560 |
| 13 | 3054080 |
| 14 | 5660160 |
| 15 | 6621120 |
| 16 | 9768960 |
| 17 | 10264320 |
| 18 | 25885760 |
| 19 | 29062656 |
| 20 | 33933312 |
| 21 | 36484992 |
| 22 | 38707200 |
| 23 | 78532608 |
| 24 | 163418112 |
| 25 | 260601600 |
| 26 | 458987520 |
| 27 | 4044349440 |