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 | 5 |
| 2 | 7 |
| 3 | 715 |
| 4 | 7293 |
| 5 | 524875 |
| 6 | 3547206349 |
| 7 | 3393195750 |
| 8 | 15419113345821 |
| 9 | 26315472459271727875 |
| 10 | 261083216622451556697 |
| 11 | 2530298441183206558150 |
| 12 | 39265828264113994596230058165 |
| 13 | 61628134000978439089402342590 |