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 | 1 |
| 2 | 255 |
| 3 | 3280 |
| 4 | 32640 |
| 5 | 97656 |
| 6 | 836400 |
| 7 | 960800 |
| 8 | 4177920 |
| 9 | 7173360 |
| 10 | 24902280 |
| 11 | 21435888 |
| 12 | 107059200 |
| 13 | 67977560 |
| 14 | 245004000 |
| 15 | 320311680 |
| 16 | 534773760 |
| 17 | 435984840 |
| 18 | 1829206800 |
| 19 | 943531280 |
| 20 | 3187491840 |
| 21 | 3151424000 |
| 22 | 5466151440 |
| 23 | 3559590240 |
| 24 | 13703577600 |
| 25 | 7629375000 |
| 26 | 17334277800 |