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) |
|---|---|
| 0 | 1 |
| 1 | 48 |
| 2 | 1344 |
| 3 | 28672 |
| 4 | 516096 |
| 5 | 8257536 |
| 6 | 121110528 |
| 7 | 1660944384 |
| 8 | 21592276992 |
| 9 | 268703891456 |
| 10 | 3224446697472 |
| 11 | 37520834297856 |
| 12 | 425236122042368 |
| 13 | 4710307813392384 |
| 14 | 51140484831117312 |
| 15 | 545498504865251328 |
| 16 | 5727734301085138944 |
| 17 | 59298896293587320832 |
| 18 | 606166495445559279616 |