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 | 2 |
| 3 | 8 |
| 4 | 64 |
| 5 | 1024 |
| 6 | 5120 |
| 7 | 32768 |
| 8 | 51200 |
| 9 | 153600 |
| 10 | 921600 |
| 11 | 1024000 |
| 12 | 2097152 |
| 13 | 11059200 |
| 14 | 40960000 |
| 15 | 44040192 |
| 16 | 265420800 |
| 17 | 268435456 |
| 18 | 532480000 |
| 19 | 1849688064 |
| 20 | 3276800000 |
| 21 | 12740198400 |
| 22 | 13844480000 |
| 23 | 68719476736 |
| 24 | 155373797376 |
| 25 | 524288000000 |