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 | 16 |
| 3 | 768 |
| 4 | 8544 |
| 5 | 50400 |
| 6 | 205080 |
| 7 | 654864 |
| 8 | 1763328 |
| 9 | 4184064 |
| 10 | 9005400 |
| 11 | 17936160 |
| 12 | 33537504 |
| 13 | 59505888 |
| 14 | 101012184 |
| 15 | 165102000 |
| 16 | 261162240 |
| 17 | 401458944 |
| 18 | 601751448 |
| 19 | 881987904 |
| 20 | 1267087200 |
| 21 | 1787812320 |
| 22 | 2481740184 |
| 23 | 3394333008 |
| 24 | 4580116224 |