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 | 25 |
| 2 | 544 |
| 3 | 88264 |
| 4 | 9407584 |
| 5 | 1187897216 |
| 6 | 135926940964 |
| 7 | 16353452350876 |
| 8 | 1906883090233889 |
| 9 | 225710195773223581 |
| 10 | 26480802739477668891 |
| 11 | 3118944367808136172136 |
| 12 | 366509498887083495949171 |