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 | 443372888629441 |
| 2 | 39671149333495681 |
| 3 | 842526563598720001 |
| 4 | 2380296518909971201 |
| 5 | 3188618003602886401 |
| 6 | 4208895375600667752001 |